Fujitsu AUXG36LRLB, RCG30LRLB, AUXG30LRLB, AUXG54LRLB, RCG36LRLB Service Instruction

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SPLIT TYPE ROOM AIR CONDITIONER

Cassette type

Models Indoor unit Outdoor unit

AUXG30LRLB AUXG36LRLB AUXG45LRLB AUXG54LRLB

AO*G30LBTA AO*G36LBTA AO*G45LBTA

INVERTER

SERVICE

INSTRUCTION

R410A

AO*G54LBTA

RCG30LRLB RCG36LRLB RCG45LRLB RCG54LRLB

ROG30LBTA ROG36LBTA ROG45LBTA ROG54LBTA

CONTENTS

1. SPECIFICATIONS

1. DESCRIPTION OF EACH CONTROL OPERATION

1-1 COOLING OPERATION............................................................................................

1-4 AUTO CHANGEOVER OPERATION........................................................................

1-5 INDOOR FAN CONTROL.........................................................................................

1-7 OUTDOOR FAN CONTROL

1-6. AIR FLOW DIRECTION CONTROL...................

......................................................................................

...................................................................

1-8 COMPRESSOR CONTROL......................................................................................

01-01

1-2 HEATING OPERATION.............................................................................................

01-02

1-3 DRY OPERATION......................................................................................................

01-03

01-04

01-06

01-09

01-11

01-10

1-9 TIMER OPERATION CONTROL...............................................................................

01-13

1-10 ELECTRONIC EXPANSION VALVE CONTROL......................................................

01-17

1-11 TEST OPERATION CONTROL...............................................................................

01-17

1-12 PREVENT TO START FOR 3 MINUTES (3 MINUTES ST)....................................

01-17

1-13 4-WAY VALVE EXTENSION SELECT....................................................................

01-17

1-14 AUTO RESTART.....................................................................................................

01-18

1-15 PUMP DOWN..........................................................................................................

01-18

1-16 COMPRESSOR PREHEATING...............................................................................

01-20

1-17 10°C HEAT OPERATION........................................................................................

01-20

1-21 VARIOUS PROTECTIONS......................................................................................

01-24

1-22 LOW NOISE OPERATION .......................................................................................

01-27

1-24 HUMAN SENSOR(OPTION) ...................................................................................

01-28

1-20 OFF DEFROST OPERATION CONTROL...............................................................

01-23

1-19 DEFROST OPERATION CONTROL.......................................................................

01-21

1-18 ECONOMY OPERATION........................................................................................

01-20

1-23 PEAK CUT OPERATION .........................................................................................

01-28

1-25 DRAIN PUMP OPERATION............. .........................................................................

01-29

2-1 ERROR DISPLAY......................................................................................................

2. TROUBLE SHOOTING

2-2 TROUBLE SHOOTING WITH ERROR CODE

..........................................................

2-3 TROUBLE SHOOTING WITH NO ERROR CODE

....................................................

2-4 SERVICE PARTS INFORMATION

............................................................................

02-01

02-29

02-03

02-34

1-26 DESCRIPTION OF DISPLAY UNIT .........................................................................

01-30

1 . DESCRIPTION OF EACH CONTROL OPERATION

R410A

INVERTER

Cassette type

1-1. COOLING OPERATION

1-1-1 COOLING CAPACITY CONTROL

A sensor (room temperature thermistor) built in the indoor unit will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is 6.0°C higher than a set temperature,

the compressor operation frequency will attain to maximum performance.

* If the

room temperature is 1.0°C lower than a set temperature, the compressor

will be stopped.

* When the room temperature is between +6.0°C to -1.0°C of the setting temperature, the compressor frequency is controlled within the range shown in Table1. However, the maximum frequency is limited in the range shown in Fig.1 based on the fan speed mode and the outdoor temperature.

minimum frequency

maximum frequency

16rps 90rps

30,36LBTA

16rps 100rps

45LBTA

16rps 110rps

54LBTA

Hi Me Lo Qu

72rps

65rps 50rps

44rps 39rps

59rps 50rps

50rps 44rps

35rps

39rps

A zone B zone C zone D-F zone

30,36LBTA

( Table 1 : Compressor Frequency Range )

( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )

01-01

93rps 93rps 78rps 73rps

56rps 47rps

75rps 75rps

68rps 68rps

68rps 56rps

29rps

44rps 44rps 44rps

A zone B zone C zone D-F zone

Fan speed mode

Outdoor air temperature

A zone

B zone

C zone

D zone

E zone

F zone

When the room temperature rises

When the room temperature drops

36°C

32°C

21°C

12°C

2°C

34°C

30°C

19°C

10°C

0°C

45LBTA

72rps 59rps 50rps 39rps

100rps 100rps 85rps 76rps

62rps 50rps

78rps 78rps

73rps 73rps

73rps 62rps

29rps

44rps 44rps 44rps

A zone B zone C zone D-F zone

54LBTA

01-02

1-2. HEATING OPERATION

* If the room temperature is lower 6.0°C than a set temperature,

the compressor operation frequency will attain to maximum performance.

* If the room temperature is higher 1.0°C than a set temperature, the compressor

will be stopped.

* When the room temperature is between +1.0°C to -6.0°C of the setting temperature,

the compressor frequency is controlled within the range shown in Table2.

( Table 2 : Compressor Frequency Range )

minimum frequency

maximum frequency

16rps 90rps

30,36LBTA

16rps 110rps

45,54LBTA

MODEL

1-3. DRY OPERATION

1-3-1 INDOOR UNIT CONTROL

The compressor rotation frequency shall change according to set temperature and room temperature variation which the room temperature sensor of the indoor unit has detected as shown in the Table 3.

( Table 3 : Compressor frequency )

( Fig.2 : Compressor Control based on Room Temperature )

01-03

Ts : Setting temperature

Ts+0.5°C

Ts+1.5°C

Operating frequency

39rps

X zone

30,36LRLB

zone

0rps

44rps

0rpsY zone

Room Room temperature temperature

X zone

J zone

Y zone

Ts-1.5°C

Ts-0.5°C

( Fig.3 : Indoor Fan Control )

10 30 60 360 120 360 120 10 30 (sec)

OFF

S-Lo

OFF

Setting air flow

Compressor

45,54LRLB

1-4. AUTO CHANGEOVER OPERATION

01-04

When the air conditioner is set to the Auto mode by remote controller, operation starts in the optimum mode from among the Heating, Cooling, and Monitoring mode. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set between 18°C and 30°C in 0.5°C (wireless and 2WIRE remote controller) Or 1.0°C(3WIRE remote controller) steps.

When operation starts, indoor fan and outdoor fan are operated for around 1 minutes. Room temperature and outdoor temperature are sensed, and the operation mode is selected in accordance with the table below. <Monitoring mode>

( Table 4 : Operation mode selection table )

Room temperature (TR)

TR> Ts+2°C

Ts+2°C TR Ts -2°C

*Middle zone

TR < Ts -2°C Heating

When the compressor was stopped for 6 consecutive minutes by the temperature control function after the Cooling or Heating mode was selected at above, operation is switched to Monitoring and the operation mode is selected again.

When the middle zone is selected on the predetermining of the operation mode, the operation mode before the changing to the monitor mode is selected.

( Fig.4 : Outdoor temperature zone selection )

Cooling

Operation mode

Temperature

°C and over

25°C under

Heating

Cooling

Mode

*If it's Middle zone, operation mode of indoor unit is selected as below.

(1). Same operation mode is selected as outdoor unit.

If outdoor unit is operating in Cooling and Heating mode, indoor unit will be operated by the same operation mode.

(2). Selected by the outdoor temperature.

If outdoor unit is operating in other than Cooling and Heating mode, indoor unit will be operated according to the outdoor temperature as below.

TR : Room temperature Ts : Setting temperature

01-05

START

Room temp.

Ts+2

°C?

COOLING OPERATIONHEATING OPERATION

YES

Auto change over is

second or more?

YES

AUTO CHANGEOVER operation flow chart

TS : Setting temperature

Room temp.

Ts -2

°C?

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

or operation command other than

auto changeover operation?

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

or operation command other than

auto changeover operation?

Middle zone

Operation mode of

outdoor unit : Cooling?

YES

Operation mode of outdoor unit

: Heating?

YES

Outdoor temperature<

25°C?

YES

Operation mode

before the monitor mode is

cooling mode?

Monitor mode

1-5. INDOOR FAN CONTROL

1. Fan speed

( Table 5 : Standard of Indoor Fan Speed )

2. FAN OPERATION

*The following fan speed is a standard value.

The airflow can be switched in 5 steps such as AUTO, QUIET, LOW, MED, HIGH, while the indoor fan only runs. When [AUTO] is selected, the indoor Fun motor runs MED.

01-06

Operation mode

Air flow

mode

HIGH

MED+

LOW

Heating

Quiet

Cooling

560

420

300

420

270

470

530

660

430

660

560

510

430

300

430

270

510

600

700

470

700

590

530

470

300

470

270

530

630

HIGH

MED

LOW

Quiet

*Soft Quiet

S-Lo

FAN

Dry

3. COOLING OPERATION

Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Fig.5. On the other hand, if switched in [HIGH] ~ [LOW], the indoor motor will run at a constant airflow of [COOL] operation modes LOW, MED, HIGH,as shown in Table 5.

( Fig.5 : Airflow change - over ( Cooling : AUTO ) )

When the room temperature rises

When the room temperatu

re drops

TR : Room temperature Ts : Setting temperature

TR-Ts > 2°C

1°C > TR-Ts

2°C > TR-Ts > 1°C

TR-Ts > 2.5°C

1.5°C > TR-Ts

2.5°C > TR-Ts > 1.5°C =

HIGH mode

MED mode

LOW mode

*1 : Contains a condition to the following

When the operation mode is set to AUTO mode at the start of operation. When the setting temperature was changed. When the operation mode was changed to COOLING mode. When the airflow mode was changed to AUTO mode.

Speed (rpm)

30LRLB 36LRLB 45LRLB

560

420

470

510

MED

510

560

590

Cool air prevention

300

300 300

54LRLB

740

480

740

630

570

480

300

480

270

570

680

630

300

*Note, during Economy operation and operation mode is FAN, the air flow is 1 step downs. (Hi > Me, Me > Lo, Lo > Quiet, Quiet > Soft Quiet)

4. HEATING OPERATION

Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Fig.6.

On the other hand, if switched in [HIGH] ~ [LOW], the indoor motor will run at a constant airflow of [HEAT] operation modes LOW, MED, HIGH as showin in the Table 5.

6. DRY OPERATION

Refer to the Table 5 During the dry mode operation, the fan speed setting can not be changed.

01-07

Indoor heat exchanger t

emperature

( Fig.6 : Airflow change - over ( Heating : AUTO ) )

TR-Ts > -1.0°C

-2.0°C > TR-Ts

1.0°C > TR-Ts > -2.0°C =

TR-Ts > -1.5°C

-2.5°C > TR-Ts

-1.5°C > TR-Ts > -2.5°C =

LOW mode

MED mode

HIGH mode

5. COOL AIR PREVENTION CONTROL (Heating mode)

The maximum value of the indoor fan speed is set as shown in Fig.7, based on the detected temperature by the indoor heat exchanger sensor on heating mode. When the compressor does not operate, the indoor fan motor operates [S-Lo] or [Stop] mode.

( Fig.7 : Cool Air Prevention Control )

Cool air prevention

S-Lo

42°C

30°C

34°C

Indoor heat exchanger temperature rises

Indoor heat exchanger temperature drops

*Me+ or setting fan mode

*Lo or setting fan mode

39°C

37°C

32°C

24°C

*Lower speed is selected.

42°C

30°C

34°C

Indoor heat exchanger temperature rises

Indoor heat exchanger temperature drops

*Me+ or setting fan mode

*Lo or setting fan mode

39°C

37°C

32°C

24°C

*Lower speed is selected.

13 min. later

01-08

Compressor

OFF

Indoor fan Setting air flow

OFF

10 30 60 180 60 180 60 10 30

(sec)

S-Lo

480rpm

( Fig 8 : Indoor Fan Control)

7. FAN CONTROL FOR ENERGY SAVING

When the air flow setting except AUTO mode, the indoor fan motor will run as shown in Fig.8.

( Factory setting)

Setting Description Function Number Setting Value

Disable

Enable

Remote controller

00 : When the outdoor unit is stopped, the indoor unit fan operates continuously following the setting on the remote controller.

01 : When the outdoor unit is stopped, the indoor unit fan operates intermittently at a very low speed. 02 : Enable or disable this function by remote controller setting.

Set to “00”or “01”when connecting a remote controller that cannot set the Fan control for energy saving function or connecting a network converter.

To confirm if the remote controller has this setting, refer to the operating manual of each remote controller.

8. DEFROST OPERATION

When the defrost operation starts, the indoor fan runs according to cool air prevention control for 20 seconds. And the fan is stopped if 20 seconds have passed. When 60 seconds have passed after defrost operation is released, the fan runs according to cool air prevention control.

To independently can be set the airflow pattern of each louver as this image.

Individual control

All louver control

This function is given priority to overall louver control. But this function is release during the following operation.

Cold air prevention control

Monitor mode on the auto change over operation

Defrost operation

*When the 2 wire remote controller is disconnected, clear the individual setting. Otherwise, this setting can’t change.

All louver operation

*Setting of the wireless remote controller is not displayed on the wired remote controller.

*The setting louver of the individual control function cannot be controlled.

Cooling mode standard position: 2

Dry mode standard position: 2

When the mode is selected, the standard louver position of the each mode is set.

Monitor mode position: 2

Heating standard position Model 30,36 : 4 / Model 45,54 : 3

The air direction range will change as follows:

Use the wired remote controller to set this function. This function is only available by 2 wire remote controller.

(Fig.11 : Air Direction Range)

(Fig.10 : Independent louver control image)

01-09

1-6. AIR FLOW DIRECTION CONTROL

1-7. OUTDOOR FAN CONTROL

1. Outdoor Fan Motor

Following table shows the fan speed of the outdoor unit.

The outdoor fan speed changes in the range mentioned above depending on the compressor frequency and outdoor temperature. (When the compressor frequency and outdoor temperature increase, the outdoor fan speed also changes to the higher speed. When the compressor frequency and outdoor temperature decrease, the outdoor fan speed also changes to the lower speed.)

It runs at 500rpm for 20 seconds after starting up the outdoor fan. However, the fan operates at 200rpm when the initial rotation speed is 300rpm or less.

01-10

( Table 6 : Fan speed of the outdoor unit )

900/ 800/ 620/ 550/ 500/ 450/ 400/ 320/ 300/ 250/ 200

900/ 850/ 800/ 620/ 550/ 450

850/ 800/ 620/ 550/ 500/ 450/ 400/ 320/ 300/ 250/ 200

Cooling

Heating

30LBTA

850(800)/ 780(750)/ 750(700)/ 540(520)/ 360(340)/ 290(270)/ 480(0)/ 400(0)/ 350(0)/ 280(0)

Upper fan(Lower fan)

45,54LBTA

After operating the defrost control function on heating mode except economy operation, its speed becomes 900 (Lower:880) rpm regardless of the compressor speed. However, it returns to the normal speed control when the defrosting operation does not function for 240 minutes after releasing the defrost operation or when the outdoor temperature sensor detection value becomes higher than 5

The compressor and the fan start-up at the same time, and the fan stops after the compressor stops and 60 seconds has passed.

The fan doesn't operates fan 10 seconds after the fan stops.

36LBTA

900(880)/ 850(830)/ 780(750)/ 720(700)/ 570(550)/ 500(480)/ 370(350)/ 300(280)/ 220(200)

rpm

°C.

MODEL

1-8. COMPRESSOR CONTROL

2. OPERATION FREQUENCY CONTROL AT START UP

The compressor frequency soon after the start-up is controlled as shown in Fig.9.

(Fig.9 : Compressor Control at Start-up)

120 180

(rps)

Upper

limit

speed

(sec)Elapsed time

180

(rps)

Upper

limit

speed

(sec)Elapsed time

< Normal start-up Coolling/ Dry >

240

30,36LBTA

1. OPERATION FREQUENCY RANGE

The operation frequency of the compressor is different based on the operation mode as shown in Table 7.

Coolin/Dry/Heating

Min

Max

(Table 7 : Compressor Operation Frequency Range)

30,36LBTA

16rps 90rps

01-11

MODEL

01-12

Upper limit speed

Elapsed time

Ta : Outdoor temperature Tc : Compressor temperature

< Normal start-up >

180 420 480

(sec)

(rps)

Condition

Mode: Cooling

Mode: Heating

Tc > 15

Below 3 hours from comp stop

°C

Mode: Heating

Ta > 10

Below 3 hours from comp stop

3 hours longer from comp stop

°C

Ta > 10

°C

3 hours longer from comp stop

Ta < 10

°C

Tc < 15

°C

Mode: Heating

Ta < 10

Below 3 hours from comp stop

°C

Tc < 15

°C

Upper limit speed

200 700 840 1,010

(sec)

(rps)

Condition

Upper limit speed

90 210 270 300

(sec)

(rps)

1. OPERATION FREQUENCY RANGE

The operation frequency of the compressor is different based on the operation mode shown in Table 8.

Cooling i gnitaeH

Min Max

(Table 8 : Compressor Operation Frequency Range)

16rps 100rps 45LBTA

54LBTA

16rps 110rps

16rps 110rps 16rps 110rps

2. OPERATION FREQUENCY CONTROL AT START UP

The compressor frequency soon after the start-up is controlled as shown in Fig.10.

(Fig.10 : Compressor Control at Start-up)

45,54LBTA

< Immediate / under specific conditions start-up>

MODEL

1-9. TIMER OPERATION CONTROL

1. ON / OFF TIMER

OFF timer : When the clock reaches the set time, the air conditioner will be turned off.

Operation mode

Stop mode

Set time of timer

ON timer : When the clock reaches the set time, the air conditioner will be turned on.

Operation mode

Stop mode

Set time of timer

The weekly timer allows up to two ON and OFF time to set up per day.

Use this timer function to set operating time for each day of the week.

Operation mode

The operating time can be set in 30 min increments only. The OFF time can be carried over to next day. The ON timer and the OFF timer functions cannot be set with using the weekly timer.

Both ON and OFF time must be set.

2. WEEKLY TIMER

2-1. WEEKLY TIMER

Stop mode

Operation mode

Set time

Set time Set time Set time

01-13

UTY-RNR*Z1(2 wire remote controller)

1-9-1 Wired Remote Controller

ON / TIMER

*3 wire remote controller can be connected

If 3 wire remote controller is connected, set the DIP-SW on the controller PCB

Refer to the installation manual for detailed.

Sleep timer Timer 10°C heat operation

If used in combination with wireless and wired remote controller, the following function is limited.

OFF / TIMER WEEKLY TIMER

01-14

The DAY OFF setting is only available for days for which weekly settings already exist.

The DAY OFF setting can only be set one time. The DAY OFF setting is cancelled automatically after the set day has passed.

Normal

Next day setting

If the operating time carries over to the next day (during a next day setting), the effective DAY OFF range will be set as shown below.

2-2. DAY OFF setting

Stop mode

Operation mode

Stop mode

Operation mode

Preceding day Next day

DAY OFF

Stop mode

Operation mode

Stop mode

Operation mode

DAY OFF

Setting day

Preceding day Next daySetting day

01-15

AR- REJ1E

1. ON / OFF TIMER

OFF timer : When the clock reaches the set time, the air conditioner will be turned off.

Operation mode

Stop mode

Set time of timer

ON timer : When the clock reaches the set time, the air conditioner will be turned on.

Operation mode

Stop mode

Set time of timer

2. PROGRAM TIMER

ON / TIMER OFF / TIMER

PROGRAM TIMER

SLEEP TIMER

The program timer allows the OFF timer and ON timer to be used in combination one time.

Operation mode

Operation will start from the timer setting (either OFF timer or ON timer) whichever is closest to the clock's current timer setting. The order of operations is indicated by the arrow in the remote control unit's display.

SLEEP timer operation cannot be combined with ON timer operation.

Stop mode

Operation mode

Set time

Set time Set time Set time

1-9-2 Wireless Remote Controller (OPTION)

01-16

3. SLEEP TIMER

If the sleep timer is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time ON.

Set temperature rises

( Ts : Set temperature )

Stop of operation

Set temperature lowers

( Ts : Set temperature )

Stop of operation

In the COOLING operation mode

When the sleep timer is set, the setting temperature is increased 1 degC. It increases the setting temperature another 1 degC after 1 hour. After that, the setting temperature is not changed and the operation is stopped at the time of timer setting.

+1°C

+2°C

-2°C

-1°C

-4°C

-3°C

Set

60min

In the HEATING operation mode

When the sleep timer is set, the setting temperature is decreased 1 degC. It decreases the setting temperature another 1 degC every 30 minutes. Upon lowering 4 degC, the setting temperature is not changed and the operation stops at the time of timer setting.

Set

30min

60min

90min

1-10. ELECTRONIC EXPANSION VALVE CONTROL

The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the following values. The compressor frequency, the temperatures detected by the discharge temperature sensor and the outdoor temperature sensor.

The pulse range of the electronic expansion valve control is 53 ~ 480 pulses (Cooling) and 40 ~ 480 pulses (Heating).

The pulse range of the electronic expansion valve control is 53 ~ 480 pulses (Cooling) and 53 ~ 480 pulses (Heating).

At the time of supplying the power to the outdoor unit, the initialization of the electroni

expansion valve is operated (528 pulses are input to the closing direction).

The compressor won't enter operation status for 3 minutes after the compressor is stopped, even if any operation is given.

At the time when the air conditioner is switched from the cooling mode to heating mode, the compressor is stopped, and the 4-way valve is switched in 3 minutes later after the compressor stopped.

1-12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )

1-13. 4-WAY VALVE EXTENSION SELECT

01-17

30,36LBTA

45,54LBTA

1-11. TEST OPERATION CONTROL

Touch the [Test run] in the “Maintenance” screen.

The “Test Run” screen is displayed. Touch [OK] to return to the Maintenance screen, and start the test run. The test run will automatically end is approximately 60 min. If you wish to cancel the test run before it is complete, return to the “Monitor Mode screen”, and touch the On/Off button.

(Installer password* is required.)

*If the password has been changed from the default setting “0000”, please contact the installer.

With Wired Remote Controller

Under the condition where the air conditioner runs, press the TEST RUN button, and the test operation control mode will appear. During test running, the Operation LED and Timer LED of the air conditioner body blinks simultaneously. Set the test operation mode, and the compressor will continue to run regardless of whether the room temperature sensor detects. The test operation mode is released if 60 minutes have passed after setting up the test operation.

With Wireless Remote Controller

01-18

1-15. PUMP DOWN For Model 30,36

When the power was interrupted by a power failure, etc. during operation, the operation contents at that time are memorized and when power is recovered, operation is automatically resumed with

the memorized operation contents. When the power is interrupted and recovered during timer operation, timer operation is canceled, but only setting time is memorized.

[Operation contents memorized when the power is interrupted]

Operation mode

Air flow direction (Swing setting)

Individual air flow direction (Swing setting)

Human sensor auto saving (setting/timer)

Human sensor auto off (setting/timer)

Energy saving setting

Set temperature

Set air flow

Timer mode and timer time (Set by wireless remote controller)

10°C HEAT (Wireless remote controller is in use)

Each central setting

ECONOMY

1-14. AUTO RESTART

1-15. PUMP DOWN For Model 45,54

01-19

WARNING

Never touch electrical components such as the terminal blocks except the button on the display board. It may cause a serious accident such as electric shock.

During the pump-down operation, make sure that the compressor is turned off before you remove the refrigerant piping. Do not remove the connection pipe while the compressor is in operation with 2-way or 3-way valve open. This may cause abnormal pressure in the refrigeration cycle that leads to breakage and even injury.

CAUTION

Perform the pump down operation before disconnecting any refrigerant pipe or electric cable.

Collect refrigerant from the service port or the 3-way valve if pump down cannot be performed.

In case of a group control system installation, do not turn the power off pump down is completed in all outdoor units. (Group control system installation described in “SPECIAL INSTALLATION METHODS” in the installation manual of the indoor unit.)

Please check the refrigerant circuit for any leaks before starting the pump down operation. Do not proceed with the pump down operation if there is no refrigerant left in the circuit due to bent or broken piping.

Operate “PUMP DOWN” • button on the display board in the manner described below.

LED display part

Button part

14.1. Preparation for pump down

Conﬁrm that the power is off, and then open the service panel.•

14.2. Pump down procedure

(1) Check the 3-way valves (both the liquid side and gas side) are opened.

(2) Turn the power on.

POWER/

MODE

ERROR

PUMP

DOWN

LOW

NOISE

PEAK

CUT

(L1) (L2) (L3) (L4) (L5) (L6)

●○○ ○○○○○

Sign “○”: Lights off, “●”: Lights on

(3) Press “PUMP DOWN” button for 3 seconds or more after 3 minutes after power on.

POWER/

MODE

ERROR

PUMP

DOWN

LOW

NOISE

PEAK

CUT

(L1) (L2) (L3) (L4) (L5) (L6)

●○● ○○●●●

Sign “○”: Lights off, “●”: Lights on LED display lights on as shown in the above ﬁgure, and the fans and the

compressor start operating.

eht ,gnitarepo si rosserpmoc eht elihw desserp si nottub ”NWOD PMUP“ • eht fI

compressor will stop, then start again in about 3 minutes.

(4) LED display will change as shown below about 3 minutes after the compressor

starts. Fully close the 3-way valve on the liquid pipe side at this stage.

POWER/

MODE

ERROR

PUMP

DOWN

LOW

NOISE

PEAK

CUT

(L1) (L2) (L3) (L4) (L5) (L6)

●○● ○○○●●

Sign “○”: Lights off, “●”: Lights on

If the valve on the liquid pipe side is not closed, the pump down cannot be • performed.

(5) When LED display changes as shown in the below ﬁgure, close the 3-way valve on

the gas pipe side tightly.

POWER/

MODE

ERROR

PUMP

DOWN

LOW

NOISE

PEAK

CUT

(L1) (L2) (L3) (L4) (L5) (L6)

●○● ○○○○●

Sign “○”: Lights off, “●”: Lights on

If the valve on the gas pipe side is not closed, refrigerant may ﬂow into the piping • after the compressor stops.

Step (5)

Closing direction

Step (4)

Hexagon wrench

Liquid pipe

Gas pipe

Closing direction

(6) LED display changes after 1 minute as shown in the ﬁgure below.

POWER/

MODE

ERROR

PUMP

DOWN

LOW

NOISE

PEAK

CUT

(L1) (L2) (L3) (L4) (L5) (L6)

●○● ○○○○○

Sign “○”: Lights off, “●”: Lights on Fans and compressor stop automatically.

If the pump down is successfully completed (the above LED display is shown), the • outdoor unit remains stopped until the power is turned off.

(7) Turn the power off.

POWER/

MODE

ERROR

PUMP

DOWN

LOW

NOISE

PEAK

CUT

(L1) (L2) (L3) (L4) (L5) (L6)

○○○ ○○○○○

Sign “○”: Lights off

PUMP DOWN is completed.

(Note)

To stop pump down, press the “PUMP DOWN” button again.• To start the pump down again after the compressor is automatically stopped due to an • error, turn the power off and open the 3-way valves. Wait 3 minutes, turn the power on and start the pump down again.

When starting the operation after completion of the pump down, turn the power off, • and then open the 3-way valves. Wait 3 minutes, turn the power on and perform a test run in the “COOL” operation mode.

If an error occurs, recover the refrigerant from service port.•

1-16. COMPRESSOR PREHEATING

When the outdoor temperature is lower than 20°C and the all operation mode has been stopped for 30 minutes, power is applied to the compressor and the compressor is heated. (By heating the compressor, warm air is quickly discharged when operation is started.) When operation was started and when the outdoor temperature rises to 26°C or greater, preheating is ended.

1-17. 10°C HEAT OPERATION

The 10°C HEAT operation The 10°C HEAT The 10°C HEAT

operation can be set by the wireless remote controller.

functions by pressing 10°C HEAT button on the remote controller.

operation is almost the same operation as below settings.

Mode Heating

Setting temperature 10°C

Fan mode AUTO

( Table9 )

1-18. ECONOMY OPERATION

The ECONOMY operation functions by pressing ECONOMY button on the remote controller. The ECONOMY operation is almost the same operation as below settings.

Mode Cooling/ Dry Heating

Target temperature Setting temp.+1°C Setting temp.-1°C

( Table10)

01-20

1-19. DEFROST OPERATION CONTROL

1. CONDITION OF STARTING THE DEFROST OPERATION

Integratingdefrost

(Constant monitoring)

If the compressor continuous operation time is less than 10 minutes, the OFF number of the compressor is counted. If any defrost operated, the compressor OFF count is cleared.

2. CONDITION OF THE DEFROST OPERATION COMPLETION

Defrost operation is released when the conditions becomes as shown in Table 14.

( Table 14 : Condition of defrost release )

Release Condition

Outdoor heat exchanger temp. is higher than 12°C or Compressor operation time has passed 15 minutes.

The defrost operation starts as shown in the following Table 11, 12, and 13.

From 2nd and later

defrost after

starting operation

Less than 35 minutes More than 35 minutes

Does not operate

Compressor integrating operation time

( Table 11 : Condition of 1st defrost operation)

1st defrost

after

starting operation

Compressor integrating operation time

Less than 22 minutes More than 22 minutes More than 62 minutes

Does not operate

Outdoor heat exchanger temp.

Below -9°C

Outdoor heat exchanger temp.

Below -10°C

Outdoor heat exchanger temp.

Below -5°C

More than 240 minutes

( For long continuous operation )

Less than 10 minutes

( For

intermittent operation )

Compressor integrating operation time

Outdoor heat exchanger temp.

Below -3°C

OFF count of the compressor

40 times

( Table 13 : Condition of Integrating defrost operation)

( Table 12 : Condition of 2nd defrost operation)

01-21

01-22

3. Defrost Flow Chart

The defrosting shall proceed by the integrating operation time, outdoor temperature and outdoor heat exchanger temperature as follows.

(Not defrosted for 10 minutes)

Heating operation start : Compressor ON

Outdoor heat exchanger temp.: Over 12°C

Compressor ON time: Maximum 15 minutes

Defrost end

Compressor integrating operation: Over 22 minutes

Compressor integrating operation: Over 62 minutes

Outdoor heat exchanger temp.: Below - 9°C

Outdoor heat exchanger temp.: Below - 5°C

Compressor integrating operation: Over 35 minutes

2nd and later defrost

Compressor : OFF Outdoor fan motor : OFF 30 sec later 4-way valve : OFF 36 sec later compressor : ON

Compressor integrating operation: Over 240 minutes

Integrating defrost

(Constant monitoring)

Defrost Indicator: [Operation lamp] 7 sec ON / 2 sec OFF

Defrost start

Outdoor heat exchanger temp.: Below - 10°C

Outdoor heat exchanger temp.: Below - 3°C

Compressor OFF count : 40 times

1st defrost

1-20. OFF DEFROST OPEARTION CONTROL

01-23

1. OFF DEFROST OPERATION CONDITION

When operation stops in the [Heating operation] mode, if frost is adhered to the outdoor unit heat exchanger, the defrost operation will proceed automatically. In this time, if indoor unit operation lamp flashes slowly (7 sec ON / 2 sec OFF), the outdoor unit will allow the heat exchanger to defrost, and then stop.

In heating o

peration, the outdoor heat exchanger temperature is less than -4°C, and

compressor operation integrating time lasts for more than 30 minutes.

OFF Defrost Flow Chart

Heating operation stop

Outdoor heat exchanger temp. : Below -4°C and Compressor integrating operation : Over 30 minutes

Defrost start

Defrost Indicator: [Operation lamp] 7 sec ON / 2 sec OFF

Outdoor heat exchanger temp. : Over 12°C

Compressor ON time : Maximum 15 minutes

Defrost end

2. OFF DEFROST RELEASE CONDITION

Release Condition

Outdoor heat exchanger temp. is higher than 12°C or Compressor operation time has passed 15 minutes.

( Table 15 : OFF Defrost Release Condition )

OFF defrost operation is released when the conditions becomes as shown in Table 15.

1-21. VARIOUS PROTECTIONS

1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENTION CONTROL

The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature.

When the discharge temperature becomes higher than Temperature ,the compressor frequency is decreased 10rps(30,36) 14rps(45,54), and it continues to decrease the frequency for 10/14rps every

120 seconds until

the temperature becomes lowe

r than Temperature .

When the discharge temperature becomes lower than Temperature , the control of the compressor frequency is released.

When the discharge temperature becomes higher than Temperature ,the compressor is stopped and the indoor unit LED starts blinking.

(Table16 : Discharge Temperature Over Rise Prevention Control / Release Temperature)

01-24

The compressor frequency is controlled so that the outdoor unit input current does not exceeds the current limit value that was set up with the outdoor temperature. The compressor frequency returns to the designated frequency of the indoor unit at the time when the frequency becomes lower than the release value.

2. CURRENT RELEASE CONTROL

30LBTA 36LBTA

104°C 101°C 110°C

Temperature

30,36LBTA

45,54LBTA

[ Heating ]

T0 : Outdoor Temperature

[ Cooling ]

T0 (Control / Release)

9.0A / 8.5A

10.0A / 9.5A

12.5A / 12.0A

14.5A / 14.0A

50°C

46°C

40°C

T0 : Outdoor Temperature

[ Cooling ]

T0 (Control / Release)

9.0A / 8.5A

10.0A / 9.5A

13.0A / 12.5A

16.5A / 16.0A

50°C

46°C

40°C

T0 : Outdoor Temperature

T0 (Control / Release)

10.0A / 9.5A

11.5A / 11.0A

14.5A / 14.0A

17°C

12°C

5°C

[ Heating ]

T0 : Outdoor Temperature

T0 (Control / Release)

10.0A / 9.5A

11.5A / 11.0A

16.0A / 15.5A

18.0A / 17.5A

17°C

12°C

5°C

45,54LBTA

(Table 17 : Current Release Operation Value / Release Value)

(Control / Release)

[Heating]

900/880rpm 850/830rpm 780/750rpm 720/700rpm 570/550rpm 500/480rpm 370/350rpm 300/280rpm 220/200rpm

20°C < Ta

14.5A/14.0A

16.5A/16.0A

19.5A/19.0A

Outdoor unit fan speed (UP / LO)

Ta < 12°C

12°C < Ta < 20°C

Ta : Outdoor Temperature

MODEL

01-25

3. ANTIFREEZING CONTROL (Cooling and Dry mode)

The compressor frequency is decrease on cooling & dry mode when the indoor heat exchanger temperature sensor detects the temperature lower than Temperature . Then, the anti-freezing control is released when it becomes higher than Temperature .

(Table 18 : Anti-freezing Protection Operation / Release Temperature)

Outdoor temperature

Over than 10°C

or 12°C *2

Less than 10°C *1 or 12°C *2

*1. When the temperature rises. *2. When the temperature drops.

4°C

7°C

13°C

Temperature Temperature

68°C

63°C

4. COOLING PRESSURE OVER RISE PROTECTION

On cooling mode, the compressor frequency is controlled as following based on the detection value of the outdoor heat exchanger temperature sensor.

Outdoor heat exchange temperature

Compressor is OFF

The compressor frequency is decreased 7rps every 120seconds.

Release of protection

45,54LBTA

67°C

Outdoor heat exchange temperature

Compressor is OFF (3 minutes stop)

Release of protection

30,36LBTA

After 60sec. temp detection starts

Ta : Outdoor Temperature

(Control / Release)

[ Cooling ]

850/800rpm

780/750rpm 750/700rpm 540/520rpm 360/340rpm

290/270rpm

480/ 0rpm 350/ 0rpm 280/ 0rpm400/ 0rpm

50°C < Ta

12.5A/12.0A

5.0A/4.5A

6.5A/6.0A

11.0A/10.5A

8.0A/7.5A

12.5A/12.0A

12.5A/11.5A14.5A/14.0A

14.5A/14.0A

17.5A/17.0A

19.0A/18.5A

11.5A/11.0A

13.5A/13.0A

16.5A/16.0A

19.0A/18.5A

19.5A/19.0A

9.0A/8.5A

10.0A/9.5A

15.5A/15.0A

15.0A/14.5A

16.0A/15.5A

9.0A/8.5A

6.0A/5.5A

10.0A/9.5A

16.5A/16.0A

10.5A/10.0A

13.0A/12.5A

13.5A/13.0A

Outdoor unit fan speed (UP / LO)

Ta < -15°C

46°C < Ta < 50°C

40°C < Ta < 46°C

38°C < Ta < 40°C

31°C < Ta < 38°C

19°C < Ta < 31°C

13°C < Ta < 19°C

0°C < Ta < 7°C

-5°C < Ta < -0°C =

-10°C < Ta < -5°C =

-15°C < Ta < -10°C =

7°C < Ta < 13°C

01-26

5. LOW PRESSURE PROTECTION CONTROL (For Cooling mode) *Model 45,54LBTA

(a).The detected value of pressure sensor is 0.02MPaG or less,

continues for 5 minutes, the compressor is stopped.

(b). When 7 minutes has passed and low pressure sensor detects value is more than 0.05MPaG after the protection stop by (a), the compressor restarts. (c).When the protection (a) operates 5 times within 2 hours after the restart by (b), the error is displayed and the compressor stops. [Permanent stop]

0.78MPaG

0.68MPaG

Release of protection

-8 rps every 1 minute

Pressure

(Fig 13 : Anti freezing protection)

(a).When the low pressure value becomes 0.68MPaG or less continues for 1 minute, the compressor speed -8 rps. (b). When the low pressure value becomes 0.68MPaG or less after the protection (a), the compressor continues speed -8 rps every 1 minute until the detected value becomes more than

0.68MPaG. (c). When the low pressure value becomes more than 0.78MPaG, this protection is released.

0.05MPaG

0.02MPaG

Release of protection

Hold

Compressor stop

Pressure

(Fig 12 : Low pressure protection 1)

Hold

5-1. Low Pressure Protection 1

5-2. Low Pressure Protection 2

- 20°C

Cooling

Heating

When the detection value of outdoor temperature sensor is lower than temperature in the table below, the compressor is stopped.

(Table 19 : Operation temperature of compressor stop control)

Operation temperature

Temperature

7. COMPRESSOR STOP CONTROL

The suction temperature and the fan motor rotation speed are monitored, and there is limitations on the rotational frequency of the fan motor.

- Operation conditions

In the case that the condition 1 and the condition 2 are fulfilled from the start of driving the fan motor. Condition 1 : Suction temperature > 32°C Condition 2 : Target number of rotations > 720 rpm

- Operation content

The maximum number of revolutions is restricted to 720 rpm

- Release conditions

In the case that the condition 1 or the condition 2 are fulfilled from the start of this limitation. Condition 1 : Suction temperature < 30°C Condition 2 : Target number of rotations < 720 rpm

6. INDOOR UNIT FAN MOTOR ROTATION FREQUENCY LIMITATION

01-27

1-22. LOW NOISE OPERATION

Low Noise mode

LEVEL 1

LEVEL 2

Cooling

Model 45 Model 54

Heating

Cooling

Heating

Outdoor fan speed

[rpm]

Compressor speed

[rps]

The compressor speed and the outdoor unit fan sp

Capacity priority mode

(1) Operation condition

The function setting is set the “1” for the capacity priority mode.

When detect the shortage capacity or enough capacity condition continuous 30 minute, the mode is upped or downed for 1 step.

(2) Check the capacity condition

30min

Enough

30min

Enough

30min Shortage

(3) Operation

Automatic switching 1 Level 1 setting

Automatic switching 2 Level 2 setting

Shortage

Enough

eed are limited to reduce the operation noise by External Input. During the LOW NOISE OPERATION, "CURRENT OVERLOAD OPERATION", "ECONOMY OPERATION" and "PEAK CUT OPERATION" are effective, and the outdoor unit operates by lowest current of them. However, during the DEFROST OPERATION, the compressor operates by the speed for DEFROST OPERATION.

( Table 20 : Detail of Low Noise Operation )

540/520

570/550

Normal operation

*The performance drops when operating in the LOW NOISE OPERATION.

Low noise mode 2

Low noise mode 1

30min

Enough

30min Shortage

Normal operation

Low noise mode 1

Required compressor speed > Limited compressor speed of low noise mode

Required compressor speed < Limited compressor speed of low noise mode

(Upper / Lower)

540/520

570/550

01-28

1-23. PEAK CUT OPERATION

(Table 22 : Outline of Peak Cut Operation )

LEVEL 1 LEVEL 2 LEVEL 3 LEVEL 4

100%

75%50%

Forced

thermostat-OFF

The Current Value is limited to reduce the power consumption by External Input. During the PEAK CUT OPERATION, "CURRENT OVERLOAD OPERATION", "ECONOMY OPERATION" and "LOW NOISE OPERATION" are effective, and the outdoor unit operates by lowest current of them. However, this function becomes invalid during DEFROST OPERATION.

PEAK CUT LEVEL

Peak Cut

For Rated Capacity

*Percentage is rated electrical power ratio.

1-24. HUMAN SENSOR (OPTION )

(Table 10)

Operation mode

Cool / Dry

Heat

Operation details

(if there is no one in the room for a while)

The set temperature will be increased by a maximum of approximately 2

°C.

The set temperature will be decreased by a maximum of approximately 2

°C.

If no one enters the room during the set time (15, 30, 60, 90, 120, 180 minutes), the set

If no one enters the room during the set time (1 to 24 hours in 1 hour increments), the air conditioner will automatically stop operation.

Equal sensitivity range of temperature

Auto saving operation

Auto off operation

Application range

temperature will be automatically controlled. (When someone comes back into the room, the human sensor will detect this, and automatically revert to the original settings).

* High limit : 30°C

* Low limit : 16°C

Detecting position :

0.8m from floor surface

Ceiling height :

3.2m

01-29

1-25. DRAIN PUMP OPERATION

1. When the compressor starts, the drain pump starts simultaneously.

2. The drain pump operates continuously for 3 minutes after the compressor is turned off as show in Fig15.

3. When the compressor stops by the "Anti- freezing protection", the drain pump is turned off in 1 hour after the compressor stops.

4. When the water level in the drain pan rises up and then the float switch functions:

The compressor, indoor and outdoor fan motor operation are stopped. Drain pump operates continuously for 3 minutes after the float switch is turned off. (Almost condensing water may be drained)

5. When the float switch turns ON continuously for 3 minutes, "FAILURE INDICATION" operates.

(It is necessary to turn off power for release it. )

6. When the float switch turns OFF less than 3 minutes, the unit starts Cooling operation.

1 2

1.When the water level in the drain pan rises up and then the float switch functions:

Drain pump operates continuously for 3 minutes after the float switch is turned off. (Almost condensing water may be drained)

2. When the float switch turns ON continuously for 3 minutes, "FAILURE INDICATION" operates.

Thereafter, even if the float switch turns OFF, the "FAILURE INDICATION" is not released. (It is necessary to turn off power for release it. )

During Cooling / Dry mode

3 minutes

3 minutes ST

OFF

Float Switch

Compressor

Indoor Fan

Drain Pump

3 minutes

OFF

Float Switch

Drain Pump

During Heating / Fan mode / Stop operation

Less than 3 minutes

The indoor unit fan motor operates after the float switch is turned off.

(Fig 15 : Detail of Drain Pump Operation)

3 minutes3 minutes

10 minutes 60 minutes

Start

(0 minutes)

180 minutes

3 minutes3 minutes

OFF

Drain Pump

Inv erte r co ver

01-30

1-26. DESCRIPTION OF DISPLAY UNIT For Model 45,54

•

Display lamp

Function or operation method

(1) POWER / MODE

Green

Lights on while power on. Local setting in outdoor unit or error code is displayed with blink.

(2) ERROR

Red

Blinks during abnormal air-conditioner operation.

(3) PUMP DOWN (L1)

Orange

Lights on during pump down operation.

(4) LOW NOISE MODE (L2, L3)

Orange

Lights on during “Low noise” mo

de when local setting is activated.

(Lighting pattern of L2 and L3 indicates low noise level)

(5) PEAK CUT (L4, L5, L6)

Orange

Lights on during “Peak cut” mode when local setting is activated. (Lighting pattern of L4, L5 and L6 indicates peak cut level)

SW1 SW2 SW3 SW4 SW5

(1) (2) (3) (4) (5)

LED DISPLAY

Various settings can be adjusted by changing Push switches on the board of the outdoor unit.

( Excerpt from the "INSTALATION MANUAL" )

Switch

Function or operation method

SW1 To switch between “Local setting” and “Error code display”.

SW2

To switch between the individual “Local settings” and the “Error code displays”.

SW3

To fix the individual “Local settings ” and the “Error code displays”.

SW4 To return to “Operation status display”.

SW5 To start the pump down operation.

MODE

SELECT

ENTER

EXIT / INITIALIZE

PUMP DOWN

PUSH SWITCH

1-00. ERROR HISTORY MODE

1-26-1 Layout of Display Unit

    

01-31

•

In this mode, the "Operation Condition" and "Error Code" can be displayed by Push Switch on outdoor unit PCB

LED

Power / Mode

LED

Display Item

Compressor frequency

Upper fan speed (Outdoor unit)

Lower fan speed (Outdoor unit)

EEV pulse

Pressure sensor value (Low pressure range)

Pressure sensor value (High pressure range)

Outdoor air temperature sensor value

Discharge temperature sensor value

Heat-exchanger temperature sensor value (Middle)

Current value

Present Value Of Each Item

Compressor accumulated time

(Table :23 Procedure for

Present Value)

Procedure

Operation

Power

Mode

Error L1 L2 L6L5L4L3

During status display, press the MODE SWITCH 1 time.

(Status display : Outdoor unit is stopping and no error)

When the EXIT SWITCH is pressed, this mode ends

and returns to the status display.

Selecting display items can be done by pressing

the SELECT SWITCH. (Return to Procedure 3)

Press the ENTER SWITCH. (Data is displayed by lighting LED.

Refer to Table : 24)

When the POWER / MODE LED blinking 1

time,

press the ENTER SWITCH.

DATA

: Light ON: Light OFF : Blinking

1 :

1 Time Blinking

1-00. ERROR HISTORY MODE

1-26-2 Display mode

(Table :24 Display pattern

)

: Light ON: Light OFF

n :

n Time Blinking

Press the SELECT SWITCH and adjust to DISPLAY ITEM

(from L1 to L3) that you want to confirm. (Refer to Table : 23)

ERROR

L1 L2 L3

: Blinking

(Table 25 : Detail of LED Display Data)

: Light ON: Light OFF

1 :

1 Time Blinking

Item No,

Display Item

Power Mode

Error L1 L2 L6L5L4L3

Compressor Frequency ( 0 ~ 95rps )

Outdoor Unit Upper Fan Speed ( 0 ~ 900rpm )

Outdoor Unit Lower Fan Speed ( 0 ~ 900rpm )

EEV Pulse ( 0 ~ 480pulse )

Pressure sensor value <Low pressure range> ( 0 ~ 2.1MPa )

Pressure sensor value <High pressure range> ( 2.1 ~ 4.2MPa )

Check the Low Pressure Range if it is displayed [ ~ 2.1 ]

Check the High Pressure Range if it is displayed [ 1.81 ~ 2.1 ]

0 1 ~ 15 16 ~ 30 31 ~ 45 46 ~ 60 61 ~ 75 76 ~ 90 90 ~ 95

0 1 ~ 150 151 ~ 300 301 ~ 450 451 ~ 600 601 ~ 750 751 ~ 900 901 ~ 0 1 ~ 150 151 ~ 300 301 ~ 450 451 ~ 600 601 ~ 750 751 ~ 900 901 ~ 0 1 ~ 80 81 ~ 160 161 ~ 240 241 ~ 320 321 ~ 400 401 ~ 480 481 ~

~ 0.0

0.01 ~ 0.3

0.31 ~ 0.6

0.61 ~ 0.9

0.91 ~ 1.2

1.21 ~ 1.5

1.51 ~ 1.8

1.81 ~ 2.1 ~ 2.1

2.11 ~ 2.4

2.41 ~ 2.7

2.71 ~ 3.

3.01 ~ 3.3

3.31 ~ 3.6

3.61 ~ 3.9

3.91 ~ 4.2

01-32

: Light ON: Light OFF

1 :

1 Time Blinking

Item No,

Display Item

Power Mode

Error L1 L2 L6L5L4L3

Outdoor Air Temperature ( -30 ~ 70

°C

)

Discharge Temperature ( -30 ~ 120

°C

)

Heat-exchanger Temperature <Middle> ( -30 ~ 80

°C

)

Current ( 0 ~ 10A )

Compressor Accumulated Time ( H )

~ -15

-15 ~ -5

-5 ~ 5 5 ~ 15 15 ~ 25 25 ~ 35 35 ~ 45 45 ~ ~ 55 55 ~ 65 65 ~ 75 75 ~ 85 85 ~ 95 95 ~ 105 105 ~ 115 115 ~ ~ 53 53 ~ 55 55 ~ 57 57 ~ 59 59 ~ 61 61 ~ 63 63 ~ 65 65 ~

~ 0.0

0.0 ~ 1.5

1.5 ~ 3.0

3.0 ~ 4.5

4.5 ~ 6.0

6.0 ~ 7.5

7.5 ~ 9.0

9.0 ~ 0 0 ~ 10000 10000 ~ 20000 20000 ~ 30000 30000 ~ 40000 40000 ~ 50000 50000 ~ 60000 60000 ~

01-33

01-34

1-00. ERROR HISTORY MODE

•

In this mode, the history of abnormality that occurred in the past can be confirmed.

(Table : 26 Procedure for History Mode )

Procedure

Operation

Power

Mode

During status display, press the MODE SWITCH 2 times. (Status display : Outdoor unit is stopping and no error)

When the EXIT SWITCH is pressed, this mode ends and returns to the

status display

Selecting display items can be done by pressingthe SELECT SWITCH. (Return to Procedure 3)

Press the ENTER SWITCH, Error code is displayed by lighting LED. (Refer to TROUBLESHOOTING)

When the POWER / MODE LED blinking 2 ti

mes,

press the ENTER SWITCH.

: Light ON: Light OFF : Blinking

2 : 2

Times Blinking

n : n Times Blinking

1-26-3 Error history mode

Error L1 L2 L6L5L4L3

Press the SELECT SWITCH and adjust to DISPLAY ITEM (from L1 to L3) that you want to confirm. (Refer to Table : 27)



n n

DATA

LED

Power / Mode

LED

Display Item

ERROR

L1 L2 L3

(Table :27 Display pattern

)

: Light ON: Light OFF

n :

n Time Blinking

: Blinking

Newest error code

Error code before 1 time

Error Code

Error code before 2 times

2 . T ROU BLE SHOOTING

R410A

Casset te type INVERTER

Indoor Room Thermistor Error

Wired Remote Controller Communication Error

Error C ontents

Trouble shooting

02-01

2 ERROR DISPLAY

2-1 INDOOR UNIT AND WIRED REMOTE C ONTROLLER DISPLAY

Serial Communication Error

External communication Error

Combination error

Indoor unit address setting Error

Connection unit number error (Indoor unit Wired remote controller Error)

Indoor Unit Fan Motor Error

Indoor Heat Ex. Thermistor Error

Drain pump Error

1,2

1- 15

IPM Error

Error Code

Indoor unit Communication circuit (wired remote controller) Error

Manual Auto SW error

Indoor unit PCB model information Error

Indoor Unit Error

Inverter Error

Outdoor unit main PCB model information Error

Error Contents

Trouble shooting

Error Code

Over Current Error

Discharge Thermistor Error

Outdoor Thermistor Error

Heat Sink Thermistor Error

Current sensor Error

Pressure sensor Error

Heat Ex. Liquid Outlet Thermistor Error

Compressor Thermistor Error

Compressor Control Error

Outdoor Unit Fan Motor 1 Error

Outdoor Unit Fan Motor 2 Error

4-way Valve Error

Discharge Temp. Error

Compressor Temp. Error

Low Pressure Error

Active filter voltage error

1. If an error occurs, an error icon appears on the “Monitor mode screen”. Touch the [Status] on the “Monitor mode screen”.The “Status” screen is displayed.

2. Touch the [Error Information] on the “Status”screen. The “Error Information”screen is displayed. (If there are no errors, the [Error Information] will not be displayed.)

3. 2-digit numbers correspond to the error code in the table below. Touch the [Next page] (or [Previous page]) to switch to other connected indoor u

nits.

Example) 2WIRE remote controller

Check the Error LED display on the Indoor unit (IR Receiver *Option )

1. Check ECONOMY (Green) LED Blinking, it means the Error on the system. (Not brinking: No Error)

2. Count OPERATION (Green) LED blinks: The number of blinking means the first digit of Error code.

3. Count TIMER (Orange) LED blinks: The number of blinking means the second digit of Error code.

Example) ECONOMY: Blinking continuous / OPERATION: 4times / TIMER: 1time Indoor Room Thermistor Error

Mode Set Temp.

Fri 10:00AM

kcaBrotinoM

Page 1/ 4

Page 1/ 5

Air Flow Direction

Economy

Individual

Error Code

Address

[ 1 ]

[ 02 01 ]

[ 14 . 15, 41 . 44 ]

[ ]

[ Off ]

Error Information

Status

Error Information

Fan

44rorrE rosneS namuH

Check the Error code on the wired remote controller (Remote controller *Option)

Check that the “ERROR” LED blinks, then press the [Enter] button once. For details, refer to the following table.

2-1-2 OUTDOOR UNIT DISPLAY For Model 45,54

Error Contents

POWER

MODE

ERROR

Serial Communication Error

2 2 2 2 2 2 2

(L1) (L2) (L6)(L5)(L4)(L3)

IPM Error

Indoor Unit Error

Inverter Error

Over Current Error

Discharge Thermistor Error

Outdoor Thermistor Error Heat Sink Thermistor Error

Current sensor Error

Pressure sensor Error

Compressor Thermistor Error

Compressor Control Error Outdoor Unit Fan Motor 1 Error

Outdoor Unit Fan Motor 2 Error

4-way Valve Error

Discharge Temp. Error

Compressor Temp. Error

Low Pressure Error

2 2 2 2 2 2 2 2

1 5 6

3 6

5 7

2 7

3 7

4 7

7 8

4 8

6 9

4 9

5 9

7 9

8 9

01 1 01

01 5

Heat Ex. Liquid Outlet Thermistor Error

LED DISPLAY

PUMP DOWN

LOW NOISE

PEAK CUT

Trouble shooting

1,2

17 19

21 22 23 24 25 26 27 28 29 30 31 32 33 34

1-15

1 ~ 15 : 1~ 15 Times Blinking

: Light ON:FFO thgiL :

2 : 2Times Blinking

You can determine the operating status by the lighting up and blinking of the LED lamp.

LED display part

Display when an error occurs.

POWER/

MODE

ERROR

PUMP

DOWN

LOW

NOISE

PEAK

CUT

(L1) (L2) (L3) (L4) (L5) (L6)

Blink

(Hi speed)

Sign “ ”: Lights off, “ ”: Lights on

Check that the “ERROR” LED blinks, then press the “ENTER” button once.(1) For details, refer to the following table.(2)

02-02

Trouble shooting 1 OUTDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

Indicate or Display:

YESYES

Serial Communication Error (Serial Reverse Transfer Error)

Outdoor unit Main PCB Outdoor unit Fan motor

1. Connection failure 2. External cause 3. Main PCB failure 4. Active filter module failure

5. Transistor PCB (IPM) failure 6. Filter PCB failure 7. Outdoor unit Fan motor failure

Check Point 1-1 : Reset the power and operate

Does error indication reappear?

Check Point 1-2 : Check external cause such as noise

Check if the ground connection is proper. Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which causes harmonic wave).

Check Point 2 : Check connection

Check any loose or removed connection line of between indoor unit and outdoor unit.

>> If there is an abnormal condition, correct it by referring to Installation Manual or Data & Technical Manual.

Check connection condition in control unit. (If there is loose connector, open cable or mis-wiring)

Check Point 3 : Check the voltage of power supply

Check the voltage of power supply

>> Check if AC198V(AC220V-10%) - 264V(AC240V+10%) appears at outdoor unit terminal L - N.

When the indoor unit cannot receive the serial signal from Outdoor unit more than 2minutes after power ON, or the indoor unit cannot receive the serial signal more than 15seconds during normal operation.

Error code : 11

Outdoor unit : Model 45.54

2-2 TROUBLE SHOOTING WITH ERROR CODE

Check Point 4 : Check serial signal (Reverse transfer signal)

Check serial signal (Reverse transfer signal)

>> Check if indicated value swings between AC90V and AC270V at outdoor unit terminal 1 - 3. >> If it is abnormal, Check the parts as follows.

- Outdoor unit fan motor (PARTS INFORMATION 5)

- Active filter module (PARTS INFORMATION 6)

- Transistor PCB (IPM) (PARTS INFORMATION 7)

- Filter PCB (Check the wire of CN110) >> If Outdoor fan motor is abnormal, replace Outdoor unit fan motor and Main PCB. >> If

Active filter module or IPM is abnormal, replace it.

>> If the parts are normal, replace Main PCB.

RED

WHITE

BLACK

WHITE

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

02-03

Trouble shooting 2 INDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

YESYES

Serial Communication Error (Serial Forward Transfer Error)

Indoor unit Controller PCB

1. Connection failure 2. External cause 3. Controller PCB failure

Check Point 1-1 : Reset the power and operate

Does error indication reappear?

Check Point 1-2 : Check external cause such as noise

Check if the ground connection is proper. Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which causes harmonic wave).

Check Point 2 : Check connection

Check any loose or removed connection line of between indoor unit and outdoor unit.

>> If there is an abnormal condition, correct it by referring to Installation Manual or Data & Technical Manual.

Check connection condition in control unit. (If there is loose connector, open cable or mis-wiring)

Check Point 3 : Check the voltage of power supply

Check the voltage of power supply

>> Check if AC198V(AC220V-10%) - 268V(AC240V+10%) appears

at outdoor unit terminal L - N.

Check Point 4 : Check serial signal (Forward transfer signal)

Check serial signal (Forward transfer signal)

>> Check if indicated value swings berween AC30v and AC130V at outdoor unit terminal 2 - 3. >> If it is abnormal, replace Controller PCB.

When the outdoor unit cannot properly receive the serial signal from indoor unit for 10 seconds or more.

02-04

1 2

3 L

RED

WHITE

BLACK

BLACK WHITE

Indicate or Display:

Error code : 11

POWER

MODE

ERROR

(L1) (L2) (L6)(L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Trouble shooting 3 INDOOR UNIT Error Method:

Detective A ctuators: Detective details:

Forecast of Cause:

Check Point 1-2 : Check Wired Remote Controller and Controller PCB

Check Point 1 : Check the connection of terminal

Wired Remote Controller

Communication Error

Indoor unit Controller PCB Wired Remote Controller

1. Connection failure 2. Wired Remote Controller failure 3. Controller PCB failure

Check & correct the followings.

Check the connection of terminal berween Wired Remote Controller and indoor unit, and check if there is a disconnection of the cable.

After turning off the power,

When the indoor unit cannot properly receive the signal from Wired Remote Controller for 1 minute or more.

>> If it is DC13V , Remote Control is failure. (Controller PCB is n ormal) >> Replace Remote Contro l >> If it is DC 0V, Controller PCB is failure. (Check Remote Control once again) >> Replace Controller PC B

Ceck Voltage at CN14 of Controller PCB. (Terminal 1-3, Terminal 1-2) (Power supply for the Remote Control)

In di c a te o r D i s p l ay :

Error code : 12

POWER

MODE

ERROR

(L1) (L2) (L6)(L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

02-05

Outdoor unit : Model 45.54

Check Point 2-1 : Check Indoor unit controller PCB

The number of connecting indoor unit and Remote controller in one RCgroup were less than 32 units.

Check Point 2 : Wire installation Wrong RCgroup setting

Wrong wire connection in RCgroup (Please refer to the installation manual)

Change controller PCB and ch eck the Error after setting remote controller address

Check if controller PCB damage

Trouble s hooting 4 INDOOR UNIT E rror Method:

External communication error

Detective Actuators:

Detective details:

Forecast of Cause :

OKOK

External communication error

Check any loose or removed connection of between the controller PCB to the external I/OPCB

>>If there is an abnormal condition, correct it by refer to installation manual or the tec hnical manual.

Check the condition condtion on the external I/O PCB and the controller PCB

(If there is loose connector, open cable or mis-wiring)

the same a signal has not been received for 15sec

After receiving a signal from the external I/O PCB,

1. Connection failure 2.External I/O PCB failure 3.Controller PCB failure

Check Point 1 : Check the connection

Check Point 2: Replace external I/O PCB

If Chec k Point 1 do not improve the symptom, change External I/O PC B.

OKOK

Check Point 3: Replace Controller PCB

If Chec k Point 2 do not improve the symptom, change Controller PCB.

Indicate or Display:

Error code : 18

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

02-06

Outdoor unit : Model 45.54

Trouble s hooting 5 INDOOR UNIT Error Method:

Detective Actuators: Detec tive details:

1. When the outdoor unit type is multi.

Forecast of Cause:

Combination error

Indoor unit

1. The selection of indoor units is incorrect

Check Point 1 : Check the type of indoor unit

Check the type of the connected indoor unit.

>> If abnormal condition is found, correct it.

Check Point 2 : Replace Main PCB

If Chec k Point 1 do not improve the symptom, replace Main PCB of Outdoor unit.

Indicate or Display:

Error code : 23

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

02-07

Outdoor unit : Model 45.54

Detective Actuators:

Wired remote controller ( 2-Wire ) Indoor unit Controller PCB circuit

Detective details:

When the address number set by auto setting and manual setting are mixed in one RC group. When the duplicated address number exists in one RC group.

Check Point 3 : Check Indoor unit controller PCB

Forecast of Cause :

1. Wrong wiring of RCgroup 2. Wrong remote address setting 3. Indoor unit controller PCB failure

4. Remote controller failure

Check Point 1 : Wire installation

Wrong wire connection in RCgroup (Please refer to the installation manual)

Change controller PCB and check the Error after setting remote controller address

Check if controller PCB damage

Check Point 2 : Wrong RCgroup setting

The given address number by auto setting (00) and the manual set number (Except 00) were not existing in one RCG. The remote controller address setting by U.I. were not existing same address. The duplicated address number is not existing in one RCgroup

Trouble s hooting 6 INDOOR UNIT Error Method:

Indoor unit address setting error

Indicate or Display:

Error code : 26

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

02-08

Outdoor unit : Model 45.54

02-09

Trouble shooting 7 INDOOR UNIT E rror Method:

Connection unit number error (Indoor unit in Wired remote controller system)

Detective Actuators:

Wired remote controller ( 2-Wire ) Indoor unit Controller PCB circuit

Detective details:

When the number of connecting indoor units are out of specified rule.

Forecast of Caus e :

1. Wrong wiring / Number of I.U, RC in RCgroup 2. Indoor unit controller PCB defective

Check Point 1 : Wire installation

Wrong number of connecting indoor unit

Check Point 2 : Check Indoor unit controller PCB

Check if controller PCB damage

Check if controller PCB and check the Error after setting remote controller address

Indicate or Display:

Error code : 29

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 3 : Replace Controller PCB

Check Point 2 : Check Indoor unit electric components

YE SYE S

Trouble s hooting 8

INDOOR UNIT Error Method:

Indoor unit PCB model information error

Indoor unit Controller PCB

1. External cause 2. Defective connection of electric components 3. Controller PCB failure

Check Point 1-1 : Reset Power Supply and operate

Does Error indication show again?

Check Point 1-2 : Check external cause such as noise

Check if the ground connection is proper. Check if there is any equipment that causes harmonic wave near the power cable (Neon light bulb or any electronic equipment which causes harmonic wave).

Note : EEPROM

EEPROM(Electronically Erasable and Programmable Read Only Memory) is a nonvolatile memory which keeps memorized information even if power is turned off. It can change the contents electronically. To change the contents, it uses higher voltage than normal, and it can not change a partial contents. (Rewriting shall be done upon erasing the all contents.) There is a limit in a number of rewriting.

Change Controller PCB.

Check all connectors. (loose connector or incorrect wiring)

Check any shortage or corrosion on PCB.

When power is on and there is some below case.

1. When model information of EEPROM is incorrect.

2. When the access to EEPROM failed.

Indicate or Display:

Error code : 32

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

02-10

Outdoor unit : Model 45.54

Trouble s hooting 9 INDOOR UNIT Error Method:

Detective Actuators: Detec tive details:

Forecast of Cause :

OKOK

Manual Auto Switch Error

Indoor Unit Controller PCB Indicator PCB Manual Auto Switch

When the Manual Auto Switch becomes ON for consecutive 30 or more seconds.

1. Manual Auto Switch failure 2. Controller PCB and Indicator PCB failure

Check Point 1 : Check the Manual Auto Switch

Check if Manual Auto Switch is kept pressed. Check ON/OFF switching operation by using a meter.

>> If Manual Auto S witch is disabled (on/off switc hing), replace it.

Check Point 2 : Replace Controller PCB and Indicator PCB

If Chec k Point 1 do not improve the symptom, replace Controller PC B and Indicator PCB and execute the check operation again.

02-11

Indicate or Display:

ERROR CODE : 35

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Trouble s hooting 10 INDOOR UNIT Error Method:

Indoor unit Communication circuit (wired remote controller) error

Detective Actuators:

Indoor unit Controller PCB circuit

Detective details:

Detect the communication error of microcomputer and communication PCB.

Check Point 2 : Replace the communication PCB

Forecast of Cause :

2. Indoor unit controller PCB defective

1.Communication PCB defective

Check Point 1 : Check the connection of terminal

Indoor unit - Check the connection the communication PCB and the controller PCB

After turning off the power supply, check & correct the followings

If the Check point 1 is ok, replace the communication PCB

Indicate or Display:

Error code : 3A

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

02-12

Check Point 3 : Replace the controller PCB

If condition doesn’t change, replace the controller PCB

Outdoor unit : Model 45.54

Detective Actuators :

Indoor Unit Controller PCB Circuit Indoor Temperature Thermistor

Detective details:

Indoor unit thermistor is open or short is detected always.

Forecast of Caus e :

1. Connector failure connection 2. Thermistor failure 3. Controller PCB failure

Check Point 2 : Remove connector and check Thermistor resistance value

Thermistor Characteristics(Rough value)

If Thermis tor is either open or shorted, replace it and reset the power.

Check Point 1 : Check connection of Connector

Check if connector is loose or removed Check erroneous connection Check if thermistor cable is open

>>Reset Power when reinstalling due to removed connector or incorrect wiring.

6.58.010.012.515.820.225.933.6

3.594.355.3Resistance value (k )

Check Point 3 : Check Voltage of Controller PCB (DC 5.0V)

Make sure circuit diagram of each indoor unit and check terminal voltage at Thermistor (DC5.0V)

If the voltage does not appear, replace Controller PC B and execute the check operation again.

Trouble s hooting 11 INDOOR UNIT E rror Method:

Indoor Room Thermistor Error

Temperature (°C )

40 45 50

5 10 15 20 25 30 35

Resistance value (k )

BLACK

CN8

H/E Thermistor

Room Temp. Thermistor

BLACK

CN32

Indicate or Display:

Error code : 41

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

02-13

Outdoor unit : Model 45.54

Detective Actuators :

Indoor Unit Controller PCB Heat Exchanger (MID) Thermistor

Detective details:

Indoor unit thermistor is open or short is detected always.

Forecast of Caus e :

1. Connector failure connection 2. Thermistor failure 3. Controller PCB failure

Check Point 1 : Check connection of Connector

Check if connector is loose or removed Check erroneous connection Check if thermistor cable is open

>>Res et Power when reinstalling due to removed connector or incorrect wiring.

Trouble s hooting 12 INDOOR UNIT E rror Method:

rouble shooting

INDOOR UNIT E rror Method:

Indoor Heat E x. Thermistor Error

31.739.649.762.980.3103134176

17.120.825.6Resistance value (k )

Temperature (°C )

40 45 50

5 10 15 20 25 30 35

Resistance value (k )

Check Point 2 : Remove connector and check Thermistor resistance value

Thermistor Characteristics(Rough value)

If Thermis tor is either open or shorted, replace it and reset the power.

Check Point 3 : Check voltage of Controller PCB (DC5.0V)

Make sure circuit diagram of each indoor unit and check terminal voltage at Thermistor (DC5.0V)

If the voltage does not appear, replace Controller PC B and execute the check operation again.

BLACK

CN8

H/E Thermistor

Room Temp. Thermistor

BLACK

BLACKB

CN32

Indicate or Display:

Error code : 42

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

02-14

Outdoor unit : Model 45.54

02-15

Trouble s hooting 13

INDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause:

Human sensor error

Indoor unit Main PCB

2. Sensor failure eruliaf BCP niaM tinu roodnI .3eruliaf noitcennoC .1

2 When the signal from the sensor is "L"(=0V) for more than 10 min.

Detect the open condition of the sensor.

Check Point 1 : Check the connector connection and cable open

Check Point 2 : Conduction check

Check if connector is loose or removed Check erroneous connection Check if sensor cable is open

>>Reset Power when reinstalling due to removed connector or incorrect wiring.

OK (S ensor connections error) OK(S ensor signal error)

Disconnect the sensor and check the 2-3pin on sensor connector.

>>With conduction : Main PCB failure >>Without conduction : Sensor failure

Check Point 2 : Voltage check

Disconnect the sensor and check the Voltage of 1pin of the CN10 on the Main PCB

>>5V: Sensor failure >>Other than 5V: Main PCB failure

Indicate or Display:

Error code : 44

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

02-16

Trouble s hooting 14 INDOOR UNIT E rror Method:

Indoor Unit Fan Motor1 Error

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 1 : Check rotation of Fan

Check Point 2 : Check ambient temp. around motor

Indoor unit Power Supply PCB Indoor unit fan motor

1. Fan rotation failure 2. Fan motor winding open 3. Motor protection by surrounding temperature rise

4. Power Supply PCB failure 5. Indoor unit fan motor failure

Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor)

>>If Fan or B earing is abnormal, replace It.

Check excessively high temperature around the motor. (if there is any surrounding equipment that causes heat)

>>Upon the temperature coming down, restart operation.

When the fan motor speed is less than 1/3 of the target fan speed for 56 seconds.

When detect the 0 rpm for 56 seconds after fan motor started.

Check Point 4 : Replace Power Supply PCB

If Chec k Point 1- 3 do not improve the symptom, replace Power Supply PCB.

Check Point 3 : Check Indoor unit fan motor

Check Indoor unit fan motor. (PARTS INFORMATION 4)

>>if Indoor unit fan motor is abnormal, replace Indoor unit fan motor.

Indicate or Display:

Error code : 51

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Trouble shooting 15 INDOOR UNIT Error Method:

Drain pump Error

Detective Actuators:

Indoor Unit Controller PCB Circuit Float Switch

Detective details:

When Float switch is ON for more than 3 minutes.

Check Point 1 : Check Float Switch

Check operation of float switch. (any blocking by dust, etc.) Remove Float switch and check ON/OFF switching operation

by using a meter.

>>If Float switc h is abnormal, replace it.

ON OFF

Fo recas t of C ause :

1. Float switch failure 2. Shorted connector/wire 3. Controller PCB failure

4. Drain pump failure 5. Hose clogging

Check Point 2 : Check Connector and Wire

Check loose contact of CN9 and shorted wire (pinched wire).

>>Replace Float switch if the wire is abnormal

Check Point 3 : Check Drain Hose

Check Drain Hose .

>>If there is Hose clogging. Please clear the clog.

02-17

Indicate or Display:

Error code : 53

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Check Point 4 : Check Controller PCB and Drain Pump

If drain pump is not run on the working condition, check the voltage of the C N71 on the controller PCB.

12V : Replace the Drain Pump

Measurement result

Other than 12V : Replace the controller PCB

Check Drain Pump.

WHITE

RED

CN71-1

CN71-2 CN71-3

CN71-4

CN71

DC DRAIN PU MP MOTOR

DC12V

Detective Actuators: Detective details:

Forecast of Cause:

Check Point 2 : Replace Main PCB

YE SYE S

Trouble s hooting 16

OUTDOOR UNIT E rror Method:

Outdoor unit main PCB model information error

Outdoor unit Main PCB

1. External cause (Noise, temporary open, voltage drop) 2. Main PCB failure

Check Point 1-1 : Reset Power Supply and operate

Does Error indication show again?

Check Point 1-2 : Check external cause

Check if temporary voltage drop was not generated. Check if momentary open was not generated. Check if ground is connection correctly or there are no related cables near the power line.

Change Main PC B.

Access to EEPROM failed due to some cause after outdoor unit started.

02-18

Indicate or Display:

Error code : 62

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Inverter Error

YE S

Check Point 1-2 : External cause

Transistor PCB Error information received from Transistor PCB

1. External cause. 2. Power supply to Filter PCB to Inverter PCB wiring disconnection, open 3. Filter PCB failure 4. Transistor PCB failure

Check if temporary voltage drop was not generated. Check if temporary open was not generated. Check if ground is connected correctly or there are no related cables near the

power line.

Check Point 2 : Check the wiring (Power supply to Filter PCB to Inverter PCB)

Connector and wiring connection state check Cable open check

Replace Filte

r PCB and Inverter PCB.

Check Point 1-1 : Turn the power on again.

Error displayed again?

Check Point 3 : Replace Filter PCB (INV) and Inverter PCB

02-19

Trouble s hooting 17

Detective Ac tuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

2 6 3

Indicate or Display:

Error code : 63

Outdoor unit : Model 45.54

Trouble s hooting 18 OUTDOOR UNIT E rror Method:

Active filter voltage error

02-20

Detective Actuators:

Detective details:

Forecast of Cause :

OKOK

Outdoor unit Main PCB Active filter module Transistor PCB

1. External cause 2. Connector connection failure 3. Main PCB failure 4. Active filter module failure

5. Transistor PCB failure

Check Point 2 : Check connection of Connector

Check if connector is removed.

Check erroneous connection. Check if cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 4 : Check Transistor PCB

Check Point 1 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Instant drop : Check if there is a large load electric apparatus in the same circuit.

Momentary power failure : Check if there is a defective contact or leak current in the power supply circuit.

Noise : Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

Check Point 5 : Replace Main PCB

If Chec k Point 1 - 4 do not improve the symptom, change Main PC B.

OKOK

Check Point 3 : Check Active filter module

Check Active filter module.

>>If Active filter module is abnormal, replace it.

Check Transistor PCB

>>If Transis tor PC B is abnormal, replace it.

When inverter input DC voltage is higher than 430V or lower than 110V. When a momentary power cut off occurred on low voltage

Outdoor unit : No indication

Indicate or Display:

Error code : 64

Detective Actuators:

Detective details :

Forecast of Cause :

Check Point 3 : Check Outdoor Fan

Check Point 6 : Replace Main PCB

OKOK

Check Point 1 :

Check connections of Outdoor Unit Electrical Components

Outdoor unit Main PCB C Transistor PCB

ompressor

1. Defective connection of electric components 2. Outdoor Fan Operation failure 3

6. Transistor PCB failure

. Outdoor Heat Exchanger clogged 4. Compressor failure 5. Main PCB failure

Check if connector is removed.

Check if

the terminal connection

is loose.

Check erroneous connection.

Check if cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Check Outdoor Fan, Heat Exchanger

Is there anything obstructing the air distribution circuit? Is there any clogging of Outdoor Heat Exchanger? Is the Fan rotating by hand when operation is off ?

>> If the Fan Motor is locked, replace it.

Check Outdoor Fan Motor. (Refer to Trouble shooting 29,30)

>> If the Fan Motor is failure, replace it.

Check Point 4 : Check Compressor

(P ARTS INF ORMATIO N 2)

Check Compressor.

If Chec k Point 1 5 do not improve the symptom, change Main PCB .

When more than normal operating current to IPM in Main PCB flows,

the compressor stops.

After the compressor restarts, if the same operation is repeated within 40sec,

the compressor stops again.

If and repeats 5 times, the compressor stops permanently.

02-21

Trouble s hooting 19 OUTDOOR UNIT E rror Method:

IPM Error

Indicate or Display:

Error code : 65

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

OKOK

Check Point 5 : Check Transistor PCB

Check Transistor PCB

>>If Transis tor PCB is abnormal, replace it.

Outdoor unit : Model 45.54

Discharge Thermistor Error

Discharge temperature thermistor

Discharge temperature thermistor short detected Discharge thermistor open detected

1. Connector connection failure, open

2. Thermistor failure

3. Main PCB failure

Check Point 1 : Check the connector connection and cable open

Connector connection state check Cable open check

Check Point 2 : Check the thermistor

Thermistor characteristics check (Disconnect the thermistor from the PCB and check.) * For the thermistor characteristics, refer to the "Service Parts Information 8".

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Main PCB 30/36(CN63:1-2) 45/54(CN62:1-2) voltage value = 5V Remove the thermistor from Main PCB, check the voltage.

If the voltage does not appear, replace Main PCB

and execute the check operation again.

02-22

Trouble s hooting 20

Detective Actuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

Indicate or Display:

Error code : 71

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

CN62

THERMISTOR

(COMP SHELL)

THE RMIS TOR

(DIS.PIPE.)

BLACK

BL AC K

[45/ 54]

1 2

3 4

1 2

3 4

Discharge temperature thermistor (

CN62:1-2)

BROWN

[30/ 36]

CN63

THERMISTOR

(DIS.PIPE.)

321

Discharge temperature thermistor (

CN63:1-3)

Compressor Thermistor E rror

Compressor temperature thermistor

Compressor temperature thermistor short detected Compressor thermistor open detected

1. Connector connection failure, open

2. Thermistor failure

3. Main PCB failure

Check Point 1 : Check the connector connection and cable open

Connector connection state check

Cable open check

Check Point 2 : Check the thermistor

Thermistor characteristics check (Disconnect the thermistor from the PCB and check.) * For the thermistor characteristics, refer to the "Service Parts Information 8".

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Main PCB 30/36(CN64:1-3) 45/54(CN62:3-4) voltage value = 5V Remove the thermistor from Main PCB, check the vol

tage.

If the voltage does not appear, replace Main PCB

, and execute

the check operation again.

02-23

Trouble s hooting 21

Detective Actuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

Indicate or Display:

Error code : 72

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

[30/ /54[]63 54]

BROWN

CN64

THERMISTOR

(COMP.TEMP.)

123

Compressor temperature thermistor(CN64:1-3) Compressor temperature thermistor(CN62:3-4)

CN62

THE RMIS TOR

(COMP SHE LL )

THERMISTOR

(DIS.PIPE.)

BLAC K

BLACK

1 2

3 4

1 2

3 4

Heat exchanger liquid temperature thermistor

Heat exchanger outlet temperature thermistor short or open detected

1. Connector connection defective, open

2. Thermistor failure

3. Main PCB failure

Check Point 1 : Check the connector connection and cable open

Connector connection state check

Cable open check

Check Point 2 : Check the thermistor

Thermistor characteristics check (Disconnect the thermistor from the PCB and check.) * For the thermistor characteristics, refer to the "Service Parts Information 8".

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Main PCB 30/36(CN65:1-3) 45/54(CN63:1-2) voltage value = 5V Remove the thermistor from Main PCB

, check the voltage.

If the voltage does not appear, replace Main PCB

, and execute

the check operation again.

If the voltage does not appear,

02-24

Heat Ex. Outlet Temp. Thermistor Error

Trouble s hooting 22

Detective Actuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

7 3

PUMP DOWN

LOW NOISE

PEAK CUT

Indicate or Display:

Error code : 73

Outdoor unit : Model 45.54

BLACK

[30/ 36]

CN65

THERMISTOR

(PIPE.)

321

Compressor temperature thermistor(CN65:1-3)

[45/54]

THE RMIS TOR

(PIPE .)

THERMISTOR

(PIPE (MID) TEMP)

Compressor temperature thermistor(CN63:1-2)

CN63

BLAC K

BLACK

4 3

2 1

4 3

2 1

Outdoor Thermis tor Error

Outdoor temperature thermistor

Outdoor temperature thermistor short or open detected

1. Connector connection defective, open

2. Thermistor failure

3. Main PCB failure

Check Point 1 : Check the connector connection and cable open

Connector connection state check Cable open check

Check Point 2: Check the thermistor

Thermistor characteristics check (Disconnect the thermistor from the PCB and check.) * For the thermistor characteristics, refer to the "Service Parts Information 8".

Check Point 3 : Check voltage of Main PCB (DC5.0V)

Remove the thermistor from Main PCB, check the voltage.

If the voltage does not appear, replace Main PCB

, and execute

the check operation again.

If the voltage does not appear, replace Main PCB

02-25

Trouble s hooting 23

Detective Ac tuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

Indicate or Display:

Error code : 74

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Main PCB 30/36(CN62:1-3) 45/56(CN61:1-3) voltage value =5V

BLUE

[30/ /54[]63 54]

CN61

THERMISTOR

(OUT TEMP.)

3 2 1

BLACK

CN62

THERMISTOR

(OUT TEMP.)

321

Compressor temperature thermistor(CN62:1-3) Compressor temperature thermistor(CN61:1-3)

Heat Sink Thermistor Error

Outdoor unit Main PCB

Heat sink temperature thermistor (Built-in IPM) open/short detected

1. Main PCB failure

02-26

Trouble s hooting 24

Detective Ac tuators:

Detective details:

OUTDOOR UNIT Error Method:

Forecast of Cause :

If this error is displayed, replace Main PCB

Indicate or Display:

Error code : 77

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Attention!!

This unit does not have a heat sink themistor

In this case, replace

Main PCB

Outdoor unit : Model 45.54

Trouble shooting 25 OUTDOOR UNIT Error Method:

Current S ensor Error

02-27

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 3 : Replace Filter PCB

YE S

Outdoor unit Main PCB

Check Point 2 : Check connections of Outdoor Unit Electrical Components

Check if connector is removed.

Check if

the terminal connection

is loose.

Check erroneous connection. Check if cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 1-2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

1. Defective connection of electric components 2 3. Filter PCB failure. External cause

4. Main PCB failure

Instant drop : Check if there is a large load electric apparatus in the same circuit.

Momentary power failure : Check if there is a defective contact or leak current in the power supply circuit.

Noise : Check if there is any equipment causing harmonic wave near electric line.(Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

Check Point 1-1 : Reset Power Supply and operate

Does Error indication show again?

When Input Current Sensor has detected 0A, while Inverter Compressor is operating at higher than 56rps, after 1minute upon starting the Compressor. (Except during the defrost operation)

If Check Point 1, 2 do not improve the symptom, change Filter PCB.

Check Point 4 : Replace Main PCB

If Check Point 3 do not improve the symptom, change Main PC B .

Indicate or Display:

Error code : 84

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Trouble s hooting 26 OUTDOOR UNIT E rror Method:

Detective Actuators:

High pressure switch

Detective details :

Forecast of Cause :

1. High pressure switch connector disconnection, open

2. High pressure switch characteristics failure3. Main PCB failure

When the power was turned on, "high pressure switch : open" was detected.

Check Point 1 : Check the high pressure switch connection state

Connector and wiring connection state check Cable open check

Check Point 2 : Check the high pressure switch characteristics

Switch characteristics check * For the characteristics of high pressure switch, refer to below.

Check Point 3 : Replace Main PCB

Change Main PCB

, and execute the chec k operation again.

02-28

Pressure Sencer Error

Type of contact

Characteristics of pressure switch

Pressure

Pressure switch 1

4.2 0.1MPa

3.2 0.15MPa

Contact : Short Open

Contact : Open Short

(30/36:CN90,45/54:CN101)

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Indicate or Display:

Error code : 86

Outdoor unit : Model 45.54

02-29

Trouble s hooting 27 OUTDOOR UNIT E rror Method:

Over Current E rror

Detective Actuators:

Detective details:

Forecast of Cause :

OKOK

Check Point 3: Replace Main PCB

Outdoor unit Main PCB Compressor Transistor PCB

If Chec k Point 1 or 1,2 do not improve the symptom, change Main PCB .

Check Point 2: Check Transistor PCB (IPM)

>> If IPM is abnormal, replace Transis tor PC B.

OKOK

Check Point 4: Replace Compressor

If Chec k Point 3 do not improve the symptom, change Compress or.

1. Outdoor unit fan operation defective, foreign matter on heat exchanger, excessive rise of ambient temperature

2. Main PCB

3. Inverter compressor failure (lock, winding short)

4. Transistor PCB (IPM) failure

Protection stop

by overcurrent generation after inverter compressor start processing completed'' generated consecutively 10 times. * The number of generations is reset if the start-up of the compressor succeeds.

No obstructions in air passages? Heat exchange fins clogged Outdoor unit fan motor check Ambient temperature not raised by the effect of other heat sources? Discharged air no

t sucked in?

Check Point 1 : Check the outdoor unit fan operation, heat exchanger, ambient temperature

Check IPM.

(PARTS INF ORMATIO N 7)

Indicate or Display:

Error code : 94

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Trouble s hooting 28 OUTDOOR UNIT E rror Method:

Compressor Control Error

02-30

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 : Check connection of around the Compressor components

OKOK

Check Point 4: Replace Main PCB

Outdoor unit Main PCB Compressor Transistor PCB

1. Defective connection of electric components 2. Main PCB failure 3. Compressor failure

4. Transistor PCB (IPM) failure

If Chec k Point 1,2 or 1 3 do not improve the symptom, change Main PCB .

Check if connector is removed. Check erroneous connection. Check if cable is open.

>>Upon correcting the removed connec tor or mis-wiring, reset the power.

(Refer to PARTS INFORMATION 2)

For Compressor Terminal, Main PCB

While running the compressor, if the detected rotor location is out of phase with actual rotor location more than 90°, the compressor stops. After the compressor restarts, if the same operation is repeated within 40sec, the compressor stops again. If and repeats 5 times, the compressor stops permanently.

Check Point 1 : Check Noise from Compressor

Turn on Power and check operation noise.

If an abnormal noise show, replace Compressor.

OKOK

Check Point 5: Replace Compressor

If Chec k Point 4 do not improve the symptom, change Compressor.

OKOK

Check Point 3: Check Transistor PCB (IPM)

>> If IP M is abnormal, replace Transis tor PCB.

Check IPM.

(PARTS INF ORMATIO N 7)

Indicate or Display:

Error code : 95

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

02-31

Trouble shooting 29

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 3 : Check Outdoor unit fan motor

Outdoor Unit Fan Motor 1 Error

Outdoor unit Main PCB Outdoor unit fan motor

1. Fan rotation failure 2. Motor protection by surrounding temperature rise 3. Main PCB failure

4. Outdoor unit fan motor failure

Check Point 1 : Check rotation of Fan

Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor)

>>If Fan or B earing is abnormal, replace it.

Check Outdoor unit fan motor.

(PA RTS INFO RMATIO N 5)

>>If Outdoor Fan Motor is abnormal, replace O utdoor fan motor and Main PCB .

Check Point 4 : Check Output Voltage of Main PCB

Check outdoor unit circuit diagram and the voltage. (Measure at Main PCB side connector)

If the voltage is not correct, replace Main PCB .

When outdoor fan rotation speed is less than 100rpm in 20 seconds after fan motor starts, fan motor stops. After fan motor restarts, if the same operation within 60sec is repeated 3 times in a row, compressor and fan motor stops. If and repeats 5 times in a row, compressor and fan motor stops permanently.

Read wire DC voltage

Red - Black

280V (AC220V-10%) ~ 373V (AC240+10%)

White - Black

15 1.5V

CN800

1 2 3 4 5 6

BLACK WHITE YELLOW BROWN

RED

Fan motor 1 (Upper)

Check Point 2 : Check ambient temp. around motor

Check excessively high temperature around the motor. (If there is any surrounding equipment that causes heat)

>>Upon the temperature coming down, restart operation.

Indicate or Display:

Error code : 97

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

02-32

Trouble shooting 30

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 3 : Check Outdoor unit fan motor

Outdoor Unit Fan M

For Model 45/54

otor 2 Error

Outdoor unit Main PCB Outdoor unit fan motor

1. Fan rotation failure 2. Motor protection by surrounding temperature rise 3. Main PCB failure

4. Outdoor unit fan motor failure

Check Point 1 : Check rotation of Fan

Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor)

>>If Fan or B earing is abnormal, replace it.

Check Outdoor unit fan motor.

(PA RTS INFO RMATIO N 5)

>>If Outdoor Fan Motor is abnormal, replace O utdoor fan motor and Main PCB .

Check Point 4 : Check Output Voltage of Main PCB

Check outdoor unit circuit diagram and the voltage. (Measure at Main PCB side connector)

If the voltage is not correct, replace Main PCB .

Read wire DC voltage

Red - Black

280V (AC220V-10%) ~ 373V (AC240+10%)

White - Black

15 1.5V

Check Point 2 : Check ambient temp. around motor

Check excessively high temperature around the motor. (If there is any surrounding equipment that causes heat)

>>Upon the temperature coming down, restart operation.

Indicate or Display:

Error code : 98

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

CN802

1 2 3 4 5 6

BLACK WHITE YELLOW BROWN

RED

Fan motor 2 (Lower)

Outdoor unit : Model 45.54

Detective Actuators :

Detective details:

Forecast of Cause :

OKOK

1. Connector connection failure 2. Thermistor failure 3. Coil failure 4. 4-way valve failure

5. Main PCB failure

Check Point 1 : Check connection of Connector

Check if connector is removed. Check erroneous connection. Check if thermistor cable is open.

>> Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 3 : Check the solenoid coil and 4-way valve

02-33

[ Solenoid coil ] Remove 30/36:CN500,45/54:CN6 .lioc fo eulav ecnatsiser eht kcehc dna BCP morf Resistance value is about 1.7k

>> If it is O pen or abnormal resistance value, replace Solenoid Coil.

[ 4-way valve ] Check each piping temperature, and the location of the valve by the temperature difference.

>> If the value location is not proper, replace 4-way valve.

OKOK

Check Point 4 : Replace Main PCB

If Check Point 1- 3 do not improve the symptom, replace Main PC B.

Check Point 2 : Check thermistor of Indoor unit

Isn’t it fallen off the holder? Is there a cable pinched?

>> Check characteristics of thermistor, (Refer to Trouble s hooting 12,13), If defective, replace the thermistor.

Indoor Unit Controller PCB Circuit Heat Exchanger Temperature Thermistor Room Temperature Thermistor 4-way valve

When the indoor heat exchanger temperature is compared with the room temperature, and either following condition is detected continuously two times, the compressor stops. Cooling or Dry operation [Indoor heat exchanger temp.] - [Room temp.] > 20°C Heating operation [indoor heat exchanger temp.] - [Room temp.] < -14°C If the same operation is repeated 5 times, the compressor stops permanently.

Trouble shooting 31 OUTDOOR UNIT Error Method:

4-Way Valve Error

Indicate or Display:

Error code : 99

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

2. EEV defective, strainer clogged

3. Outdoor unit operation

failure

, foreign matter on heat exchanger

4. Discharge temperature thermistor

failure

5. Insufficient refrigerant

Discharge temperature thermistor

"Protection stop by "discharge temperature 115

°C

during compressor

.sruoh42nihtiwsemit2detareneg''''noitarepo

Check Point 1 : Check if 3-way valve(gas side) is open.

Discharger thermistor characteristics check (Check by disconnecting thermistor from PCB.)

* For the characteristics of the thermistor, refer to the "Service Parts Information 8".

Check Point 4 : Check the discharge thermistor

EEV open?

Strainer clogging check (before and after EEV, ACM oil return) Refer to "Service Parts Information 3, 4 "

Check Point 3 : Check the outdoor unit fan,heat exchanger

Check for foreign object at heat exchanger

Check if fan can be rotated by hand.

Motor check(PARTS INFORMATION 5)

Check Point 2 : Check the EEV, strainer

Check Point 5 : Check the refrigerant amount

Leak check

EEV open?

Strainer clogging check (before and after EEV, ACM oil return) Refer to "Service Parts In

formation 3"

Check Point 2 : Check the EEV, strainer

If the 3-way valve(gas side) was closed, open the 3-way valve(gas side) and check operation.

02-34

Check Point 1 : Check if 3-way valve(liquid side) is open.

If the 3-way valve(liquid side) was closed, open the 3-way valve(liquid side) and check operation.

1. 3-way valve not opened

Detective Actuators:

Detective details:

Forecast of Cause :

Trouble s hooting 32 OUTDOOR UNIT E rror Method:

Discharge Temp. Error

Indicate or Display:

Error code : A1

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Compressor Temp. E rror

1. 3-way valve not opened

2. EEV defective, strainer clogged

3. Outdoor unit operation

failure

, foreign matter on heat exchanger

4. Compressor temperature thermistor

failure

5. Insufficient refrigerant

Compressor temperature thermistor

Compressor temperature thermistor characteristics check (Check by disconnecting thermistor from PCB)

* For the characteristics of the thermistor, refer to the "Service Parts Information 8.

Check Point 4 : Check the compressor temperature thermistor

Check Point 3 : Outdoor unit fan, heat exchanger check

Check for foreign object at heat exchanger

Check if fan can be rotated by hand.

Motor check(PARTS INFORMATION 5)

Check Point 5 : Check the refrigerant amount

Leak check

02-35

Check Point 1 : Check if 3-way valve(gas side) is open.

EEV open?

Strainer clogging check (before and after EEV, ACM oil return) Refer to "Service Parts Information 3".

Check Point 2 : Check the EEV, strainer

EEV open?

Strainer clogging check (before and after EEV, ACM

oil return)

Refer to "Service Parts Information 3".

Check Point 2 : Check the EEV, strainer

If the 3-way valve(gas side) was closed, open the 3-way valve(gas side) and check operation.

Check Point 1 : Check if 3-way valve(liquid side) is open.

If the 3-way valve(liquid side) was closed, open the 3-way valve(liquid side) and check operation.

"Protection stop by "compressor temperature" 110°C during compressor operation""generated 2 times within 24 hours

Trouble s hooting 33

Detective Actuators:

Detective details:

OUTDOOR UNIT E rror Method:

Forecast of Cause :

Indicate or Display:

Error code : A3

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Trouble shooting 34 OUTDOOR UNIT E rror Method:

Low Pressure Error

Detective Actuators:

Detective details:

Forecast of Caus e :

1. 3-way valve not opened 2. Outdoor unit ambient temperature too low

3. Outdoor unit fan operation defective, foreign matter at heat exchanger

4. EEV defective, strainer clogged 5. Solenoid valve defective

6. Pressure sensor characteristics defective 7. Insufficient refrigerant

Pressure sensor

"Protection stop by suction pressure 0.02MPaG continued for 5 minutes" repeats 5 times within 2 hours.

No foreign object in air passage?

Heat exchange fins clogged

Fan rotates?

Outdoor unit fan motor check

Check Point 3 : Check the outdoor unit fan operation,

heat exchanger

Check Point 2 : Check the outdoor unit ambient temperature

Outdoor ambient temperature lower than operating range?

Outdoor unit EEV operation check

Strainer not clogged?

Check Point 4 : Check the outdoor unit EEV, strainer clogging

Indoor unit EEV operation check

Strainer not clogged?

strainer

Pressure sensor characteristics check

* For the characteristics of the suction pressure sensor (PARTS INFORMATION 9)

Check Point 6 : Check the suction pressure sensor

Check Point 7 : Check the refrigerant amount

Leak check

02-36

>noitarepo gnitaeH<>noitarepo gnilooC<

Check Point 1 : Check if 3-way valve(gas side) is open.

If the 3-way valve(gas side) was closed, open the 3-way valve(gas side) and check operation.

Check Point 1 : Check if 3-way valve(liquid side) is open.

If the 3-way valve(liquid side) was closed, open the 3-way valve(liquid side) and check operation.

Refer to "Service Parts Information 3"

Indicate or Display:

Error code : A5

POWER

MODE

ERROR

)6L()2L()1L( (L5)(L4)(L3)

PUMP DOWN

LOW NOISE

PEAK CUT

Outdoor unit : Model 45.54

Attention!!

30/36 units do not have the pressure sensor.

In this case, replace

the Main PCB.

Refer to "Service Parts Information 3"

Check

Trouble s hooting 35

Forecast of Cause:

OKOK

Indoor Unit - No Power

1. Power Supply failure 2. External cause

3. Electrical Components defective

Check Point 1 : Check Installation Condition

Isn’t the breaker down?

Check loose or removed connection cable.

>>If abnormal condition is found, correct it by referring to Installation Manual or Data & Technical Manual.

Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Instant drop ----- Check if there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in

the power supply circuit.

Noise ----- Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

02-37

2-3 TROUBLE SHOOTING WITH NO ERROR C ODE

Check Point 3 : Check Electrical Components

YE SYE S

Check the voltage of power supply.

>> C heck if AC 198 - 264V appears at Outdoor Unit Terminal L - N.

Check Varistor in Filter PCB.

>> If Varistor is defective, there is a possibility of an abnormal power s upply. Check the correc t power supply and replace Varistor. Upon checking the normal power supply, replace Varistor.

If the symptom does not change by above Check 3, replace Main PCB.

Check Fuse in Filter PCB.

>> If Fus e is open, check if the wiring between Terminal and F ilter P CB is loos e, and replace Fuse.

Trouble s hooting 36

Forecast of Cause:

Check Point 3 : Check Electrical Components

OKOK

YE SYE S

Check Point 1 : Check Installation Condition

Outdoor Unit - No Power

1. Power Supply failure 2. External cause

3. Electrical Components defective

Isn’t the breaker down? Check loose or removed connection cable.

>>If abnormal condition is found, correct it by referring to Installation Manual or Data & Technical Manual.

Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Instant drop ----- Check if there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.

Noise ----- Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

Check the voltage of power supply.

>> C heck if AC 198 - 264V appears at Outdoor Unit Terminal L - N.

Check Fuse in Main PCB.

>> If Fus e is open, check if the wiring between Terminal and Main PC B is loose, and replace Fuse.

Check Active Filter Module and IPM.

(P ARTS INFORMATION 6 and 7)

>> If Active Filter Module or IPM is abnormal, replace it.

If the symptom does not change by above Chec k 3, replace Main P CB.

02-38

Trouble s hooting 37

Forecast of Cause:

Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Check Point 1 : Check indoor and outdoor installation condition

Check Point 3 : Check Wired Remote Controller and Controller PCB

OKOK

No Operation (Power is ON)

1. Setting/ Connection failure 2. External cause

3. Electrical Component defective

Indoor Unit - Check incorrect wiring between Indoor Unit - Remote Control. Or, check if there is an open cable connection.

Are these Indoor Unit, Outdoor Unit, and Remote Control suitable model numbers to connect?

>> If there is some abnormal condition, correct it by referring to Installation manual and Data & Technical

Manual.

Turn off Power and check/ correct followings.

Is there loose or removed communication line of Indoor Unit and Outdoor Unit?

Instant drop ----- Check i

f there is a large load electric apparatus in the same circuit.

Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit. Noise ----- Check if there is any equipment causing harmonic wave near electric line

. (Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

>> If it is DC13V, Remote Control is failure. (C ontroller PC B is normal) >> Replace R emote Control >> If it is DC 0V, Controller PCB is failure. (Check Remote Control once again) >> Replace Controller PCB

>> If the symptom does not change by above Check 1, 2, 3, replace Main PC B of O

utdoor unit.

02-39

Check Voltage at CN14 of Controller PCB. (terminal 1-3) (Power supply to Remote Control)

Attention

Trouble s hooting 38

Forecast of Cause:

Check Point 2 : Check Outdoor Unit Operation

Check Point 1 : Check Indoor Unit

Check Point 3 : Check Site Condition

Check Point 5 : Check Refrigeration Cycle

Check Point 4 : Check Indoor/ Outdoor Installation Condition

)tuO( epiP)nI( epiP

OKOK

MPa MPa

No Cooling / No Heating

1. Indoor Unit error 2. Outdoor Unit error

3. Effect by Surrounding environment

4. Connection Pipe / Connection Wire failure 5. Refrigeration cycle failure

Does Indoor Unit FAN run on HIGH FAN?

Is Air Filter dirty? Is Heat Exchanger clogged?

Check if Energy save function is operated.

Check if Outdoor Unit is operating

Check any objects that obstruct the air flow route.

Check clogged Heat Exchanger.

Is the Valve open?

Is capacity of Indoor Unit fitted to Room size? Any windows open? Or direct sunlight ?

Check connection pipe (specified pipe length & Pipe diameter?)

Check any loose or removed communication line.

>> If there is an abnormal condition, correct it by referring to Installation Manual or Data & Technical Manual.

Check if Strainer is clogged (Refer to the figure at right).

Measure Gas Pressure and if there is a leakage, correct it.

>> When recharging the refrigerant, make sure to perform vacuuming, and recharge the specified amount.

Check EEV (PARTS INFORMATION 3)

Check Compressor (PARTS INFORMATION 1,2)

Strainer normally does not have temperature difference between inlet and outlet as shown in , but if there is a difference like shown in , there is a possibility of inside clogged. In this case, replace Strainer.

02-40

Trouble s hooting 39

Forecast of Cause :

Trouble s hooting 40

Forecast of Cause:

OKOK

MPa MPa

Abnormal Noise

1. Abnormal installation (Indoor/ Outdoor)

2. Fan failure (Indoor/ Outdoor)

3. Compressor failure (Outdoor)

Diagnosis method when Abnormal Noise is occurred

Abnormal noise is coming from Indoor Unit. (Check and correct followings)

Abnormal noise is coming from Outdoor Unit. (Check and correct followings)

Is Fan broken or deformed? Is the screw of Fan loose? Is there any object which obstruct the Fan rotation?

Is Main Unit installed in stable condition? Is the installation of Air suction grille and front panel normal?

Is Fan broken or deformed? Is the screw of Fan loose?

Is there any object which obstruct the Fan rotation?

Is Main Unit installed in stable condition? Is Fan Guard installed normally?

Check if vibration noise by loose bolt or contact noise of piping is happening.

Is Compressor locked?

>> Check Compressor (PARTS INFORMATION 1,2)

Water Leaking

1. Erroneous installation 2. Drain hose failure

Diagnosis

method when water is spitting out.

Is the filter clogged?

Check Gas Pressure and correct it if there was a gas leak.

Diagnosis method when water leak occurs

Is Drain Hose connection loose? Is there a trap in Drain Hose? Is Drain Hose clogged?

Is Main Unit installed in stable condition? Is Main Unit broken or deformed at the time of transportation or maintenance?

Is Fan rotating?

02-41

SE RVICE PARTS INFORMATION 1

MPa MPa

Compressor

Diagnosis method of Compressor ( If Outdoor Unit LED displays Error, refer to Trouble shooting )

Does not start up

Is there open or loose connection cable?

Check Main PCB, connection of Compressor, and winding resistance. (Refer to the next page).

Check Main PCB, connection of Compressor,and winding resistance. (Refer to the next page).

>> If there is no failure, the defect of Compressor is cons idered (Locked compressor due to clogged dirt or less oil)

Replace Compressor

Stops soon after starting up

Is there open or loose connection cable?

Is Gas Pipe Valve open? (Low Pressure is too low)

Check if Refrigerant is leaking. (Recharge Refrigerant

)

Check if Strainer is clogged. (PARTS INFORMATION 3)

>> If there is no failure, the defect of Compressor can be considered. (Compression part broken or valve defective.)

Abnormal noise

Defective Compressor can be cons idered. (due to inside dirt clogging or broken component)

Check if vibration noise by loose bolt or contact noise of piping is happening.

02-42

2-4 SERVICE PARTS INFORMATION

SE RVIC E PARTS INFORMATION 2

Check Point 1 : Check Connection

Check Point 2 : Check Winding Resistance

Check Point 3 : Replace Main PCB

Inverter Compressor

Check terminal connection of Compressor (loose or incorrect wiring)

Check winding resistance of each terminal

If the resistance value is 0 or infinite, replace Compressor.

If the symptom does not change with above Check 1, 2, replace Main PC B.

02-43

Resistance Value :

(RED)

(WHITE)

(BLACK)

Transistor PC B

TM303 (W)

TM304 (V)

TM305 (U)

RED

WHITE

BLACK

Compressor

Inverter P CB

0.43

at 20°C (45/54)

0.64

at 20°C (30/36)

SE RVIC E PARTS INFORMATION 3

Check Point 2 : Check Coil of EEV

Yellow - Red

Orange - Red

Blue - Red

White - Red

Read wire

46 4

Resistance value

Check Point 1 : Check Connections

Check Point 5 : Check Opening and Closing Operation of Valve

Check Point 4 : Check Voltage from Main PCB.

Check Point 3 : Check Noise at start up

Pipe (In)

Pipe (Out)

Pipe (In)

CLOSE Example : Hot G as

OPEN Example : Hot G as

Pipe (Out)

)tuO( epiP)nI( epiP

Check Point 6 : Check Strainer

at 68°F(20°C)

Outdoor unit Electronic Expansion Valve ( EEV )

]45/54[]63/03[

heck connection of connector

( Loose connector or open cable )

Remove connector, check each winding resistance of Coil.

If Resis tance value is abnormal, replace EEV.

Remove Connector and check Voltage (DC12V)

If it does not appear, replace Main PC B .

Turn on Power and check operation noise.

If an abnormal noise does not s how, replace Main PC B.

When Valve is closed, it has a temp. difference between Inlet and Outlet.

If it is open, it has no temp. difference between Inlet and Outlet.

Strainer normally does not have temperature difference between inlet and outlet as shown in , but if there is a difference as shown in , there is a possibility of inside clogged. In this case, replace Str

ainer.

02-44

CN700

EXPANSI ON VALVE COIL

RED BLUE ORANGE YELLOW WHITE

1 2 3 4 5

CN111

EXPANSION VALVE COIL

RED

BLUE ORANGE YELLOW WHITE

1 2 3 4 5 6

SE RVICE PARTS INFORMATION 5

Check Point 1 : Check rotation of Fan

Outdoor unit fan motor

Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor)

>>If Fan or Bearing is abnormal, replace it.

Check Point 2 : Check resistance of Outdoor Fan Motor 1 or 2

Refer to below. Circuit-test "Vm" and "GND" terminal

[45/54][30/36]

. Check resistance when the main power supply is OFF.

(Vm: DC voltage, GND: Earth terminal)

>>If they are short-circuited (below 300 k ), replace Outdoor fan motor and Main PC B.

Pin number (wire color)

Terminal function (symbol)

1 (Red)

2 3

4 (Black)

5 (White)

6 (Yellow)

DC voltage (Vm)

No function No function

Ground terminal (GND)

Control voltage (Vcc)

7 (Brown)

Speed command (Vsp)

Pin number (wire color)

Terminal function (symbol)

1 (Red)

2 3 (Black)

4 (White)

5 (Yellow)

DC voltage (Vm)

No function Earth terminal (GND)

Control voltage (Vcc)

Speed command (Vsp)

6 (Brown) Feed back (FG)

Feed back (FG)

SE RVICE PARTS INFORMATION 4

Check Point 1 : Check rotation of Fan

Indoor unit fan motor

Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor)

>>If Fan or Bearing is abnormal, replace it.

Check Point 2 : Check resistance of Indoor Fan Motor

Check resistance when the main power supply is OFF.

02-45

Refer to below. Circuit-test "Vm" and "GND" terminal. (Vm: DC voltage, GND: Ground terminal)

>>If they are short-circuited (below 300 k ), replace Indoor fan motor and Controller PCB.

Pin number (wire color)

Terminal function (symbol)

1 (Red)

4 (Black)

5 (White)

6 (Yellow)

7 (Brown)

DC voltage (Vm)

No function

Earth terminal (GND)

Control voltage (Vcc)

Speed command (Vsp)

Feed back (FG)

02-46-

SE RVICE PARTS INFORMATION 6

Active filter module

Check Point 1 : Check Open or Short-circuit and Diode (D1)

Check Point 2 : Check the Output DC voltage (between P and N)

L2L1

Check the Output DC voltage (between P and N) of compressor stopping and operating.

If it is abnormal,replace ACTIVE F ILTER MODUL E

Remove connector, check the open or short-circuit and the diode in the module

>> If the output voltage of compressor operating is less than the output voltage of compressor stopping, Active Filter Module is detective. >>

Replace Ac tive Filter Module

Check the open or short-circuit

Terminal

Resistance value

L1 , L2

Control Box

N1 (N)

+ (+IN)*

- ( -IN)*

multimeter (-)

N1 (N)*

360k

720k

1.65M /

20%

360k

20%

(Ref. value 1)

1.14M

(Ref. value 2)

1.01M /

(Ref. value 1)

0.76M

(Ref. value 2)

SACT32010 [ HITACHI ] LACT33020 [ HITACHI ]

PM-604 [ FGEL ] PM-703 [ FGEL ]

PM-601 [ FGEL ]

360k

20%

900k

20%

1.01M /

(Ref. value 1)

0.76M

(Ref. value 2)

540k

20%

1.65M /

(Ref. value 1)

1.14M

(Ref. value 2)

LO T No. 1302931396 -

LO T No. - 1302931395

PM-601 [ FGEL ]

B epyTA epyT

Table.1 Each type standard value

multimeter (+)

+ (+IN)*

N1 (N)*

+ (+IN)*

- ( -IN)*

N1 (N)*

* ( ) is FGEL terminal name.

Terminal

Resistance value

1.32M /

(Ref. value 1)

0.66M

(Ref. value 2)

1.01M /

(Ref. value 1)

0.76M

(Ref. value 2)

Table.2 Standard value is changed by the tool specification (Type A and B are the same value)

multimeter (-)

multimeter (+)

By kind of multimeter , the value may change significantly.

Ref. value 1 Specifications for Multimeter Manufacturer : FL UKE Model name : FLUKE11 Power source : DC9V.

Ref. value 2 Specifications for Multimeter Manufacturer : SA NWA Model name : PM3 Power source : DC3V.

LOT No. of PM-601 [ FGE L ] type

Model name

Lot No.(10 figures)

Label position

Label

SE RVICE PARTS INFORMATION 7

IPM (

Mounted on Transistor PCB)

02-47

Check Point 1

Check Point 2

Terminal

Resistance value

Tester(+) Tester(-)

Disconnect the connection wires between the Transistor PCB - Capacitor PCB

and Transistor PCB - Inverter Compressor.

Set the tester to the "Resistance" mode, and measure the resistance between the following terminals.

Set the tester to the "Diode" mode, and measure

the voltage value between the following terminals.

Judge the result of as follows:

TM301 (P) - TM305(U) / TM304(V) / TM303(W) TM302 (N) - TM305(U) / TM304(V) / TM303(W)

Over 2k (Including )

Over 20k (Including )

Terminal

Tester display

Tester(+) Tester(-)

0.3V 0.7V

YELLOW

TM301

RED

WHITE

BLACK

BLUE

TM305

TM304

TM303

TM302

W305

W304

W303

W302

CN301

IPM CONTR OL WHITE

CN303

WHITE

W301

SE RVICE PARTS INFORMATION 8

Thermistor

02-48

Check Point : Check Thermistor resistance value

Remove connector and check Thermistor resistance value.

Temperature

[°C]

Resistance Value [ k ]

Thermistor A Thermistor B Thermistor C Thermistor D

- 20

- 10

- 5 0 5 10 15 20 25 30 40 50 60 70 80 90 100 110 120

---

168.6

129.8

100.9

79.1

62.6

49.8

40.0

26.3

17.8

12.3

8.7

6.3

4.6

3.4

2.6

2.0

---

27.8

21.0

16.1

12.4

9.6

7.6

6.0

4.8

3.8

2.5

1.7

1.2

---

105.4

58.2

44.0

33.6

25.9

20.2

15.8

12.5

10.0

8.0 5

3.6

---

27.4

20.7

15.8

12.2

9.5

7.5

5.9

4.7

3.8

2.5

1.7

1.2

0.8

0.6

0.4

0.3

---

Applicable Thermistors

Discharge temp. TH Compressor temp. TH

Outdoor temp. TH Heat sink temp. THHeat exchanger. TH

SE RVICE PARTS INFORMATION 9

Pressure S ensor

Check Point : Check Voltage from Main PCB

With the connector connected to the PCB, measure the voltage between CN91:3-4 of the Main PCB.

Characteristics of pressure sensor

4.5

5.0

0.5 0

Output [DCV]

Pressure [MPa]

1 1

3 3

WHITE

PR ESSURE SE NSOR (HIGH )

BLACK

2 2

RED

CN91

2.5

3-3-17,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan

Aug. 2015 Printed in Japan

Fujitsu AUXG36LRLB, RCG30LRLB, AUXG30LRLB, AUXG54LRLB, RCG36LRLB Service Instruction

Specifications and Main Features

Frequently Asked Questions

User Manual